Add volume replication support to IBM GPFS cinder driver

[Nilesh Bhosale]

Cinder Volume Replication support is added in the Juno release:
https://blueprints.launchpad.net/cinder/+spec/volume-replication

IBM GPFS cinder driver needs to be enhanced to support the volume replication feature, in the Kilo release.

[Vincent Hou (houshengbo)]

This deserves to register a BP for it. Please submit the proposal in cinder-specs.

[Nilesh Bhosale (nilesh-bhosale)]

Since this is not a new feature, but we are extending the existing volume replication feature added with https://github.com/openstack/cinder-specs/blob/master/specs/juno/volume-replication.rst in the GPFS cinder driver, as Jay Bryant suggested, we have not created a new BP/spec, instead created a bug for adding this functionality.

[Jay Bryant (jsbryant)]

Vincent, as Nilesh notes, I was under the impression that we would not be requiring BluePrints for the implementation of features in a driver that were enabled under a different BluePrint. Please let me know if that impression was incorrect.

Thanks!

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/153918

[Mike Perez (thingee)]

Not a bug. Please open a blueprint for it to be targeted to k-3. https://wiki.openstack.org/wiki/Blueprints