Add oslo-templates formula to openstack salt formulas

Starting from Queens release all openstack formulas directly
dependent on salt-formula-oslo-template. This patch adds
oslo-templates to openstack formulas list directly.

Change-Id: I8eed9d0e5f1afd35db51d611dda50d899460324f
diff --git a/salt/master/formula/git/openstack.yml b/salt/master/formula/git/openstack.yml
index cd9df0a..093279a 100644
--- a/salt/master/formula/git/openstack.yml
+++ b/salt/master/formula/git/openstack.yml
@@ -104,6 +104,10 @@
               source: git
               address: '${_param:salt_master_environment_repository}/salt-formula-opencontrail.git'
               revision: ${_param:salt_master_environment_revision}
+            oslo_templates:
+              source: git
+              address: '${_param:salt_master_environment_repository}/salt-formula-oslo-templates.git'
+              revision: ${_param:salt_master_environment_revision}
             python:
               source: git
               address: '${_param:salt_master_environment_repository}/salt-formula-python.git'