Move specs implemented in Queens from backlog

Change-Id: If28b5bbb31168546a70492bb837df4f05165cc9c

specs/queens/index.rst

@@ -2,4 +2,17 @@
 Queens
 ======
 
-No spec document landed.
+Implemented blueprints
+
+.. toctree::
+   :glob:
+   :maxdepth: 1
+
+   *
+
+Implemented RFEs
+
+* `RBAC: Allow user to create port from specific subnet on shared network <https://bugs.launchpad.net/neutron/+bug/1543756>`__
+* `DSCP mark on the outer header <https://bugs.launchpad.net/neutron/+bug/1692951>`__
+* `Support sub-string matching when filtering port with IP address <https://bugs.launchpad.net/neutron/+bug/1718605>`__
+* `Allow DVR for E/W while leaving N/S centralized <https://bugs.launchpad.net/neutron/+bug/1667877>`__