train: Release horizon plugins under neutron stadium

Both neutron-fwaas-dashboard and neutron-vpnaas-dashboard
have no features in Train cycle, but this is the first release
during Train cycle and we would like to keep rooms for versioning
in Stein branch, so the minor version is bumped.

Change-Id: Ia8fe9abe7a59d58d6bbad2668300670aa2524d38

deliverables/train/neutron-fwaas-dashboard.yaml

@@ -5,3 +5,8 @@ type: horizon-plugin
 release-model: cycle-with-intermediary
 repository-settings:
   openstack/neutron-fwaas-dashboard: {}
+releases:
+  - version: 2.1.0
+    projects:
+      - repo: openstack/neutron-fwaas-dashboard
+        hash: b5a9b32c0095afb2efcbff65122946dd14b48fd1

deliverables/train/neutron-vpnaas-dashboard.yaml

@@ -5,3 +5,8 @@ type: horizon-plugin
 release-model: cycle-with-intermediary
 repository-settings:
   openstack/neutron-vpnaas-dashboard: {}
+releases:
+  - version: 1.6.0
+    projects:
+      - repo: openstack/neutron-vpnaas-dashboard
+        hash: dd62f1ca982ea99cc9d9da9f249b4edb6878a7ab