<cartridge-jbossews> Bug 961628 - Fix Categories listed

https://bugzilla.redhat.com/show_bug.cgi?id=961628

Update the Categories, so that the EWS 1.0 cartridge does not advertise
tomcat7 and the EWS 2.0 cartridge does not advertise tomcat6
Merge pull request #2458 from detiber/bz961628

<cartridge-jbossews> Bug 961628 - Fix Categories listed