Currently, freezer client doesnt support backup create command,
it is not so convenient. This patch add this command for debug.
Change-Id: I0313f431f066a59b6d57130b81e943bce300511b
Freezer client now has the ability to talk to v2 api endpoint
if you are using BaaS please use:
OS_BACKUP_API_VERSION=2
otherwise
OS_BACKUP_API_VERSION=1
Change-Id: I93715e18f96c35b7952f3aeac3cb05b56313f9a9