JERSEY-2410 - Code changes to fix jersey2-xdk hudson job

Same approach as for MOXy job fix (I641b200c) - security manager not used for xdk profile.
Some tests have to be excluded from surefire (different than in MOXy case), described inline
in surefire configuration (main pom.xml).

SourceEntityProviderTest was fixed to take the xdk xml header format in account for all the testcases,
the condition was missing on some places.

Change-Id: I8437ca27ff504cef85eadb4df0ea5969d0b7f259