chore(jbosseap62): replace jboss method with our own abstraction

- replace Services.addServerExecutorDependency with our own abstraction because the method signature
  from JBoss AS 7.2.0.Final / EAP 6.1 differs from EAP 6.2. The error occurs at runtime only because
  the return value of the method is compiled into the bytecode, so at runtime the method signature is
  not only the name + parameters, but return value too.

related to CAM-1599