Release python-manilaclient 1.26.0 and manila-ui 2.17.0

These have a number of bug fixes since the last release
and are both now running python 3 functional tests.

Change-Id: Ib68fa1368c76aa57ce368e66a1d165bf5204763f

deliverables/stein/manila-ui.yaml

@@ -6,3 +6,8 @@ release-type: horizon
 type: horizon-plugin
 repository-settings:
   openstack/manila-ui: {}
+releases:
+  - projects:
+      - repo: openstack/manila-ui
+        hash: 13d0c11966972c484e739a84885e8ad95221b62b
+    version: 2.17.0

deliverables/stein/python-manilaclient.yaml

@@ -11,3 +11,7 @@ releases:
       - hash: cc6fadbc96d0dddf3565d4e4b6e3a412c4f0d318
         repo: openstack/python-manilaclient
     version: 1.25.0
+  - projects:
+      - hash: e476fc94e07642a9b4243f05ba911ecaf4732ef6
+        repo: openstack/python-manilaclient
+    version: 1.26.0