Copy the API version checks from the 'openstackclient.compute.client'
module. These will only be necessary until we migrate everything to SDK
but it's very helpful until then.
Change-Id: I2d9c68db5bf891ffa25fd5a7fc9e8953e44b73ab
Signed-off-by: Stephen Finucane <sfinucan@redhat.com>
0f28588e48