
This patch ports assisted-volume-snapshots to v2.1 and make v2 and v2.1 share unit test cases. This patch addes a schema to do the input validation for snapshots_create The differences between v2 and v3 are described on the wiki page https://wiki.openstack.org/wiki/NovaAPIv2tov3 . Partially implements blueprint v2-on-v3-api Change-Id: I5b7be1de8ac2628a287897dcc5ca0eaf7a8957a2