Move instance polling into check_active()

Don't poll for the instance status in handle_create(). Allow
Resource.create() to poll the resource using check_active().

Change-Id: I13a8fefcef6594d014e7e5a3131f9342521e367d
Signed-off-by: Zane Bitter <zbitter@redhat.com>
Merge "Move instance polling into check_active()"