There are some issues around new attach/detach API/CLI,
fix them step by step. This patch adds 'all_tenants' and
'tenant' support in cinder-client.
Change-Id: I6e360987a8d8bd6dfbeb34ea88f4964813f620b2
Depends-On: 8eac3b071cb7cca8f8b11952c95476fa57daffc0
Depends-On: bae8bd017e30425295e03d13b39202a81e923c3e
Closes-Bug: #1675974