Renamed ipa_config.get to rhcs_config.get

Also added a log to show the job name, existing nodes and xml
file being run
Fix error in common.util.log.info statement

There was error in common.util.log in beaker_run function
of rhcs_ci.py
Merge pull request #27 from mrniranjan/master

Renamed ipa_config.get to rhcs_config.get