RESULTION:
1. Login to OpenStack controll node (Keystone Server)
2. Run following commands
keystone-manage --version
nova-manage --version
3. If version you got from step 2 are 2013.2.x, then you are runing Havana release
If version you got from step 2 are 2014.1.x, then you are runing IceHouse release
