Comment out Query Cache resource type (perf issue)
For the RHQ Server resource only, 2000+ Query cache resources are inventoried.
The resource type will be commented out until we find a proper solution.

Conflicts:
	modules/plugins/jboss-as-7/src/main/resources/META-INF/rhq-plugin.xml

Cherry-Pick master c7a1bad920666b9aec331441fef7da7d38c5f443