[BZ 1108095] Use topologyDelta instead of hard requestLimit for tests
fix upgrade test failures

The problem is in set up code on upgrade testing. There is no change to
production code.
[BZ 1108095] fix compiler errors
[BZ 1070262] Updates to the configuration upgrade code for the server and the agent.

This commit resolves the upgrade obfuscation for rhq-server.properties file and some minor tweaks for the agent-configuration.xml file.
[BZ 1075575] Upgrade the C* driver to a version that depends only on C* server version 1.2.18-jboss-1.
[BZ 1070262] Snip superfluous "public" access modifier.
[BZ 1070262] Obfuscate properties in agent-configuration.xml when the file originates from older agents.
[BZ 970784] Fix GUE on new deployments