Neutron package has been updated and no longer uses old (contrail_plugin_core) path
Merge pull request #30 from ravitejagettam/test-m1-build

Added fix for enabled services and cassandra
switch to stable/icehouse for devstack as stable/havana no longer exists
Switch to contrail-control as newer packages get uploaded to launchpad
update doc
modified task.sh,sanity.sh for providing a knobs for sanity testing and simple gate way testing