Profile feature

[vinodborole]

Profile:

• Each profile has the properties of a unique openstack instance
• All the commands executed will run under a particular profile that is active.
• This will affect the way the current source command work
• The config file will now have multiple profile information one been default
• Each profile will have all the properties for connecting to an openstack instance.

Commads:

• Existing source command will load all the profiles
• profile show : This will show the profile information
• profile list : List all the profiles
• profile switch : This will switch the profile
• profile active : Show the current active profile
• profile create : create a profile
• profile update : update a profile
• profile delete : delete the profile

Add necessary help and documentation for this feature