avoid multiple representation exception for source
ref #9204 revert removing xml-apis from cdmlib
ref #9204 remove xml-apis from cdmlib as it is included in java8
ref #9204 upgrade osgi.core to v7 and upgrade maven-bundle-plugin to 5.1.1
ref #9204 try to remove org.ecipse:osgi from cdmlib-service and upgrade org.osgi.core to v6
Revert "ref #6581 try to fix exception in MatchStrategyConfigurator"
This reverts commit e807e4380fddd21b2ac521057462a0d03cab298f.
ref #6581 try to fix exception in MatchStrategyConfigurator
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