Server dependency pom

Adding a new dependency pom, for the UPS server.

Benefit: in the future we will have different WAR modules (e.g. ups-wildfly, ups-eap, ups-tomee, ...). The core of the UPS dependencies are tracked in the new module, to avoid duplication of depenencies and errors, maintaining the same dependencies on different modules.


For merger: Merge into the `KeycloakBeta4_no_bootstrap` branch 
since the parent (folder) is called `dependencies`, should we name it `war-dependencies` or, just simply `server`(`-dependencies`) instead ? 

I am not sure the `server-min` is a good name ...