rgw is not accepting ACL edits via python-swiftclient on Red Hat Ceph Storage 2.0

Issue

• After a container creation ACL settings cannot be modified on the container:

# swift post rhtest01
# swift post rhtest01 -r ".r:*"
# swift stat rhtest01
                      Account: v1
                    Container: rhtest01
                      Objects: 0
                        Bytes: 0
                     Read ACL:
                    Write ACL:
                      Sync To:
                     Sync Key:
                Accept-Ranges: bytes
             X-Storage-Policy: default-placement
X-Container-Bytes-Used-Actual: 0
                   Connection: Keep-Alive
                  X-Timestamp: 0.00000
                   X-Trans-Id: tx000000000000000000056-0058345db7-507a9-default
                 Content-Type: text/plain; charset=utf-8

[root@mi-foo-bs2017 neutron-n-2 ~(openstack_exampleuser)]# swift post rhtest02 -r ".r:*"

[root@mi-foo-bs2017 neutron-n-2 ~(openstack_exampleuser)]# swift stat rhtest02
                      Account: v1
                    Container: rhtest02
                      Objects: 0
                        Bytes: 0
                     Read ACL: .r:*
                    Write ACL:
                      Sync To:
                     Sync Key:
                Accept-Ranges: bytes
                   X-Trans-Id: tx000000000000000000058-0058345dc2-507a9-default
             X-Storage-Policy: default-placement
X-Container-Bytes-Used-Actual: 0
                   Connection: Keep-Alive
                  X-Timestamp: 0.00000
                 Content-Type: text/plain; charset=utf-8
[root@mi-foo-bs2017 neutron-n-2 ~(openstack_exampleuser)]# swift post rhtest02 -r ""
[root@mi-foo-bs2017 neutron-n-2 ~(openstack_exampleuser)]# swift stat rhtest02
                      Account: v1
                    Container: rhtest02
                      Objects: 0
                        Bytes: 0
                     Read ACL: .r:*
                    Write ACL:
                      Sync To:
                     Sync Key:
                Accept-Ranges: bytes
                   X-Trans-Id: tx000000000000000000059-0058345dca-507a9-default
             X-Storage-Policy: default-placement
X-Container-Bytes-Used-Actual: 0
                   Connection: Keep-Alive
                  X-Timestamp: 0.00000
                 Content-Type: text/plain; charset=utf-8