RESTEASY-1103: Impose XML security constraints.
Bumped version in arquillian.
RESTEASY-1103: Removed war plugin from pom.xml.
1) Commented out RESTEASY-903-AS7 and RESTEASY-903-WF8 in
arquillian/pom.xml; 2) Fixed package declaration in resteasy-jaxrs:
org/jboss/resteasy/test/providers/datasource/RESTEASY775Test.java.