This commit introduces the following new flags:
--no-composer-self-update Disable composer self-update of the
composer.phar utility
--no-composer-upgrade Disable upgrade of development
dependencies using Composer.
--disable-composer Disable both composer self-update and
composer upgrade
We should ensure that composer dependencies are present before running
phpunit and behat. We should also ensure that they match the versions in
the composer.lock file.
Doing so ensures that we have a consistency across the board amongst
testers. All testers are a specific commit will be using the same version
of composer.lock and the same version of the relevant tools.
Improvements include:
* Alternative location might be useful when server administrator wants to maintain
a local copy of component cache instead of using shared $CFG->cachedir.
* Component caching is now enabled in behat tests which should improve performance.
* Standardised ignoring of component caching.
* Fixed debug mode in ABORT_AFTER_CONFIG scripts.
* General documentation improvements.
