Refactor rhcs_ci.py

Refactor rhcs_ci.py by breaking beaker_run in to different functions
to run restraint, get existing nodes. Has better documentation
Modify rhcs.conf to update the job names
Merge remote-tracking branch 'upstream/master'
reflect new restraint xml file names

Signed-off-by: Gowrishankar Rajaiyan <gsr@redhat.com>
refactor to use return instead of global var

Signed-off-by: Gowrishankar Rajaiyan <gsr@redhat.com>
Merge branch 'master' of ssh://github.com/mrniranjan/ci-utilities
Fix a minor issue in rhcs_ci.py
t push origin masterMerge branch 'mrniranjan-master'