This patch adds hyperswap volume support for Storwize/SVC driver.
New properties are added in volume type configuration:
drivers:volume_topology sets to "hyperswap" would specify a
hyperswap volume.
drivers:peer_pool specifies the pool that hyperswap remote copy
volume is stored.
drivers:host_site specifies the site name of the host.
New property is added in group type configuration:
hyperswap_group_enabled="<is> True" would setup a hyperswap group.
DocImpact
Implements: blueprint svc-hyperswap-support
Change-Id: I989d22d9580c1f44546f371af1fffded14ddcbe3
c0d471a424