Release python-designateclient 2.11.0

This is the Stein milestone-1 release for python-designateclient to
release merged commits since the last release.

See [1] for more details on the new cycle-with-intermediary library
release changes.

[1] http://lists.openstack.org/pipermail/openstack-dev/2018-October/135689.html

We plan on processing this release November 1 unless we are told to hold
off, or earlier if we get a +1 from the PTL and/or release liaison
indicating that it is all clear to proceed.

Change-Id: I6136a4dcf0e8394e1384f11c07dc94eb6c1e5fa2
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>

deliverables/stein/python-designateclient.yaml

@@ -6,3 +6,8 @@ team: designate
 type: client-library
 repository-settings:
   openstack/python-designateclient: {}
+releases:
+  - projects:
+      - hash: f0b7eb4d8c90ef516174538025629d8458d4180b
+        repo: openstack/python-designateclient
+    version: 2.11.0