Relax component name rules slightly to allow more than one digit at the end

The regexp on PARAM_COMPONENT is currently:

/^[a-z]+(_[a-z][a-z0-9_]*)?[a-z0-9]$/

Would it be possible to change it to:

/^[a-z]+(_[a-z][a-z0-9_]*)?[a-z0-9]+$/

The reason is that at Totara we have a module called 'feedback360' which doesn't meet the component criteria.

It seems strange that you can have a module called 'feedback3' but not 'feedback360'.