[WFCORE-193] : Move org.jboss.as.test.smoke.mgmt.servermodule tests from full to core.

Removing sar deployments.
Simplifying test and updating pom with required dependencies.
Merge pull request #403 from ehsavoie/WFCORE-193

[WFCORE-193] : Move org.jboss.as.test.smoke.mgmt.servermodule tests from full to core.