Make test_read_write_acl_listings more robust
Make test_read_write_acl_listings more robust

When retrying in func tests, you may get a different status if the
previous attempt succeeded.

Change-Id: Ie9bf99af1298fae5cd91fb03d5b5f13ff4873b3c

tipabu/swift,tipabu/swift,swiftstack/swift,swiftstack/swift,swiftstack/swift,tipabu/swift,openstack/swift,openstack/swift,tipabu/swift,openstack/swift,openstack/swift