Kie server small fixes - mostly cleaning-up POMs

* removed Spring and CXF deps and configs as they are not currently needed. If they are required one day, they should be added back. Having them there when they are not used is bad practice and only clutters the POMs.

* added (declared) all deps that are directly used. It is a good practice to declare all deps that the project is directly depending on.

* using `<scope>test</scope>` for `org.jboss.resteasy:tjws` as it is used only for testing.
I will remove this, but we will need it back later when we integrate with fabric8.