Revert "Revert "Drop cinderv1 endpoints""

Tests were switched to cinderv2 by default, it is safe to drop cinderv1 now.

https://gerrit.mcp.mirantis.com/#/c/29209/

This reverts commit 0821494d0ef67fee6906d2731e9dfa2df05f2a7a.

Change-Id: I614fa1d9400973b0e6ef7e368df13ce4e539bd53
2 files changed