[WFLY-2218][WFLY-2246] Improve Weld subsystem transformers and tests.
[WFLY-2279] Use org.junit.Assume to be able to conditionally ignore transformers tests against a legacy EAP version, if not on the VPN
[WFLY-2279] Add the EAP versions to ModelControllerVersion
[WFLY-2279] Ability to specify that we should use the eap repository to download artifacts
[WFLY-2218][WFLY-2246] Test Weld against EAP releases as well
[WFLY-2279] Test core model tests against previous EAP versions
[WFLY-2279] Fix memory leak causing ChildFirstClassLoaders to not get collected
[WFLY-2279] Explicitely turn on the transformers tests for eap using -Djboss.test.transformers.eap