Test "test_create_get_delete_share" located in
"manila_tempest_tests/tests/api/test_shares.py" assumes
that share is created not so fast and has "creating" status.
But it can be "available" in case of really fast creation
as in case of "dummy" driver.
Change-Id: Ie8a01e9352da47ff6e47ad8baeb5409282d3305c
Closes-Bug: #1607723