Properly set rexster-kibbles groupId.
Properly set rexster-kibbles groupId.

The rexster-kibbles submodules expected their parent to have the groupId
com.tinkerpop.rexster-kibbles, but the parent pom.xml didn't explicitly
set its groupId to that, causing it to inherit its groupId from the main
rexster pom.xml, setting it incorrectly to com.tinkerpop.rexster.

alszeb/rexster,tomgullo/rexster,tomgullo/rexster,alszeb/rexster,tingletech/rexster-tomcat,tingletech/rexster-tomcat,alszeb/rexster,tingletech/rexster-tomcat,alszeb/rexster,tomgullo/rexster,tomgullo/rexster