Add a $CFG setting to define the preset to be installed

IMPORTANT: As all these installations will be run against the same code and database, it's important to use a different dbprefix. The testing instructions have been written taking this into account (so this is just a warning in case you copy&paste the command without changing this value).

Testing scenario 1. CLI install: Apply STARTER

1. Open a terminal and run the following command. You'll probably need to modify some values, such as wwwroot, dbname, dbuser and dbpass to your local installation:

   sudo -u www-data php admin/cli/install.php --lang=en --wwwroot=http://localhost/m/integration_master --dbtype=pgsql --dbname=integrationmaster --dbuser=postgres --dbpass=postgres --prefix=aa_ --fullname=Test --shortname=Test --adminpass=test --adminemail=admin@moodle.invalid --sitepreset=starter --agree-license --non-interactive --allow-unstable

2. Check the installation process finishes without errors.
3. Open the config.php and check it contains $CFG->setsitepresetduringinstall = 'starter'.
4. Login as admin.
5. Go to "Site administration > Site admin presets".
6. Check the "Show version history" option is displayed in the "Starter" actions menu.
7. Go to "Site administration > Advanced features".
8. Check "Enable comments", "Enable tags functionality", "Enable notes", "Enable blogs", "Enable badges" and "Enable competencies" features are disabled.
9. Go to "Site administration > Plugins > Manage activities".
10. Check, at least, Chat, Database and Lesson are disabled.

Testing scenario 2. CLI install: Apply a non-existing preset

1. Open a terminal and run the following command. You'll probably need to modify some values, such as wwwroot, dbname, dbuser and dbpass to your local installation:

   sudo -u www-data php admin/cli/install.php --lang=en --wwwroot=http://localhost/m/integration_master --dbtype=pgsql --dbname=integrationmaster --dbuser=postgres --dbpass=postgres --prefix=bb_ --fullname=Test --shortname=Test --adminpass=test --adminemail=admin@moodle.invalid --sitepreset=unexisting --agree-license --non-interactive --allow-unstable

2. Check the installation process finishes without errors.
3. Open the config.php and check it contains $CFG->setsitepresetduringinstall = 'unexisting'.
4. Login as admin.
5. Go to "Site administration > Site admin presets".
6. Check the "Show version history" option is NOT displayed in the "Starter" actions menu.
7. Go to "Site administration > Advanced features".
8. Check all the settings have their default value.
9. Go to "Site administration > Plugins > Manage activities".
10. Check Chat, Database and Lesson are enabled.

Testing scenario 3. CLI install: Import valid XML file

1. Open a terminal and run the following command. You'll probably need to modify some values, such as wwwroot, dbname, dbuser and dbpass to your local installation:

   sudo -u www-data php admin/cli/install.php --lang=en --wwwroot=http://localhost/m/integration_master --dbtype=pgsql --dbname=integrationmaster --dbuser=postgres --dbpass=postgres --prefix=cc_ --fullname=Test --shortname=Test --adminpass=test --adminemail=admin@moodle.invalid --sitepreset=../tool/admin_presets/tests/fixtures/import_settings_plugins.xml --agree-license --non-interactive --allow-unstable

2. Check the installation process finishes without errors.
3. Open the config.php and check it contains $CFG->setsitepresetduringinstall = '../tool/admin_presets/tests/fixtures/import_settings_plugins.xml'.
4. Login as admin.
5. Go to "Site administration > Site admin presets".
6. Check a 3 presets are displayed: "Starter", "Full" and "Imported preset".
7. Check the "Show version history" option is displayed in the "Imported preset" actions menu.
8. Go to "Site administration > Plugins > Manage activities".
9. Check, Chat and Database are disabled and Lesson is enabled.

Testing scenario 4. CLI install: Import unexisting XML file

1. Open a terminal and run the following command. You'll probably need to modify some values, such as wwwroot, dbname, dbuser and dbpass to your local installation:

   sudo -u www-data php admin/cli/install.php --lang=en --wwwroot=http://localhost/m/integration_master --dbtype=pgsql --dbname=integrationmaster --dbuser=postgres --dbpass=postgres --prefix=dd_ --fullname=Test --shortname=Test --adminpass=test --adminemail=admin@moodle.invalid --sitepreset=../tool/admin_presets/tests/fixtures/xxxxx.xml --agree-license --non-interactive --allow-unstable

2. Check the installation process finishes without errors (there are some warnings, but no errors).
3. Open the config.php and check it contains $CFG->setsitepresetduringinstall = '../tool/admin_presets/tests/fixtures/xxxxx.xml'.
4. Login as admin.
5. Go to "Site administration > Site admin presets".
6. Check only 2 presets are displayed: "Starter" and "Full".
7. Go to "Site administration > Plugins > Manage activities".
8. Check, Chat, Database and Lesson are enabled. 

Testing scenario 5. CLI install: Import invalid XML file

1. Open a terminal and run the following command. You'll probably need to modify some values, such as wwwroot, dbname, dbuser and dbpass to your local installation:

   sudo -u www-data php admin/cli/install.php --lang=en --wwwroot=http://localhost/m/integration_master --dbtype=pgsql --dbname=integrationmaster --dbuser=postgres --dbpass=postgres --prefix=ee_ --fullname=Test --shortname=Test --adminpass=test --adminemail=admin@moodle.invalid --sitepreset=../tool/admin_presets/tests/fixtures/invalid_xml_file.xml --agree-license --non-interactive --allow-unstable

2. Check the installation process finishes without errors.
3. Open the config.php and check it contains $CFG->setsitepresetduringinstall = '../tool/admin_presets/tests/fixtures/invalid_xml_file.xml'.
4. Login as admin.
5. Go to "Site administration > Site admin presets".
6. Check only 2 presets are displayed: "Starter" and "Full".
7. Go to "Site administration > Plugins > Manage activities".
8. Check, Chat, Database and Lesson are enabled. 

Testing scenario 6. CLI install: Default installation (without --sitepreset)

1. Open a terminal and run the following command. You'll probably need to modify some values, such as wwwroot, dbname, dbuser and dbpass to your local installation:

   sudo -u www-data php admin/cli/install.php --lang=en --wwwroot=http://localhost/m/integration_master --dbtype=pgsql --dbname=integrationmaster --dbuser=postgres --dbpass=postgres --prefix=ff_ --fullname=Test --shortname=Test --adminpass=test --adminemail=admin@moodle.invalid --agree-license --non-interactive --allow-unstable

2. Check the installation process finishes without errors.
3. Open the config.php and check it does NOT contain $CFG->setsitepresetduringinstall.
4. Login as admin.
5. Go to "Site administration > Site admin presets".
6. Check the "Show version history" option is not displayed in the "Starter" nor the "Full" actions menu.
7. Go to "Site administration > Advanced features".
8. Check "Enable comments", "Enable tags functionality", "Enable notes", "Enable blogs", "Enable badges" and "Enable competencies" features are enabled.
9. Go to "Site administration > Plugins > Manage activities".
10. Check, at least, Chat, Database and Lesson are enabled.

Testing scenario 7. Manual install: Apply STARTER

1.  Edit the config.php file and change the following fields:
   • $CFG->prefix = 'gg_';
   • $CFG->setsitepresetduringinstall = 'starter';
2. Go to the Moodle site and follow the installation process, pressing the "Continue" button, to installing manually your Moodle site.
3. Once the installation process finishes and all the required forms are filled-out, go to "Site administration > Site admin presets".
4. Check the "Show version history" option is displayed in the "Starter" actions menu.
5. Go to "Site administration > Advanced features".
6. Check "Enable comments", "Enable tags functionality", "Enable notes", "Enable blogs", "Enable badges" and "Enable competencies" features are disabled.
7. Go to "Site administration > Plugins > Manage activities".
8. Check, at least, Chat, Database and Lesson are disabled.