Fix problem with some services that were not being added to the SVH
AS7-6323 resteasy-jaxrs: NoClassDefFoundError: org/apache/commons/io/output/DeferredFileOutputStream
AS7-6120 Add transformer to domain level path resource
AS7-6120 Add expression support to /host=*/core-service=management/security-realm=*/authentication=plug-in:mechanism
AS7-6120 Allow expressions on a few more JVM attributes
AS7-6120 Improve handling of deployment 'enabled' attribute

Remove spurious validation from ContentAdd