Add new repo for mistral tempest plugin

In addition to fulfilling Queens Goal "Split Tempest Plugins into
Separate Repos/Projects", This imports from a temporary github
repo that preserves the history of the plugin and additionally
applies the openstack cookiecutter to it.

Change-Id: I61ba384e25c860d245efe042d0bfc92cb6af89ea
Needed-By: I26e55c2414325530178d125b385a6fa634ef954a

gerrit/projects.yaml

@@ -4254,6 +4254,12 @@
   description: OpenStack Workflow (Mistral) Specifications
   groups:
     - mistral
+- project: openstack/mistral-tempest-plugin
+  description: Tempest Plugin for Mistral project
+  upstream: https://github.com/chkumar246/mistral-tempest-plugin.git
+  groups:
+    - mistral
+  acl-config: /home/gerrit2/acls/openstack/mistral.config
 - project: openstack/mitmstack
   description: Man-In-The-Middle OpenStack service faker for clients testing
 - project: openstack/mixmatch

gerritbot/channels.yaml

@@ -1560,6 +1560,7 @@ openstack-mistral:
     - openstack/mistral-extra
     - openstack/mistral-lib
     - openstack/mistral-specs
+    - openstack/mistral-tempest-plugin
     - openstack/python-mistralclient
   branches:
     - stable/ocata

zuul/main.yaml

@@ -1054,6 +1054,7 @@
           - openstack/mistral-extra
           - openstack/mistral-lib
           - openstack/mistral-specs
+          - openstack/mistral-tempest-plugin
           - openstack/mitmstack
           - openstack/mixmatch
           - openstack/mogan