Add more APIs for Cinder

[feiskyer]

Add more APIs for Cinder:

• attach
• detach
• reserve
• unreserve
• initialize_connection
• terminate_connection

[feiskyer]

cc @jrperritt @smashwilson

Will someone merge this PR?

[jamiehannaford]

@feiskyer Don't these operations belong in Cinder v2? You've added them to the v1 package.

[feiskyer]

@jamiehannaford Those APIs are not list at Cinder v2 and Cinder v1, but they are both working.

[jrperritt]

Where are these actions documented? I see the attach action here but not the rest.

[feiskyer]

@jrperritt There actions are defined at here. They are called directly by nova, but unfortunately not documented. These apis are useful for those who don't need nova.

[jrperritt]

Ah, OK. At the least, these operations should be moved the the v2 package, and unit and acceptance tests should be added. Though they may work with v1, I'd prefer to add new functionality to the non-deprecated version.

[feiskyer]

@jrperritt Cinder v2 #485 committed

[jrperritt]

Closing in favor of #485 ; I think that PR contains all this and more. @feiskyer let me know if that's not the case.

[feiskyer]

@jrperritt #485 contains all this and more, It's OK to close this one.