MULE-7367: Release profile creates test jars, javadocs and source jars automatically
Removed duplicate test jar generation. It can now be enaled on each module through a property.
Upgraded license-check plugin, enabled strict mode, and fixed wrong licenses.
Integration profile skips tests in non-integration modules (can be safely run from root).
Merge pull request #486 from mulesoft/MULE-7367

MULE-7367: Release profile creates test jars, javadocs and source jars a...