Add periodic job to autogenerate devstack plugins list

This is intended to obviate I72e769e5479f651673ef24b4ee20f92b12049f74

Change-Id: Ifef7573acb00ad5fb03859f737f4cb96043392f2
Depends-On: Ia04ab72900c8efd5d5289fbd7632201dcaa3e5d9

jenkins/jobs/devstack.yaml

@@ -52,3 +52,19 @@
       - upload-sphinx-draft
       - zuul-swift-upload-console-log
       # TODO(jhesketh): Add job for uploading built docs
+
+
+- job:
+    name: propose-devstack-plugins-list
+    node: proposal
+
+    builders:
+      - revoke-sudo
+      - link-logs
+      - net-info
+      - shell: |
+          /usr/local/jenkins/slave_scripts/propose_update.sh \
+              devstack-plugins-list
+
+    publishers:
+      - console-log

jenkins/jobs/projects.yaml

@@ -907,6 +907,7 @@
 
     jobs:
       - gate-{name}-bashate
+      - propose-devstack-plugins-list
 
 - project:
     name: devstack-gate

jenkins/scripts/propose_update.sh

@@ -50,6 +50,13 @@ elif [ "$OWN_PROJECT" == "requirements-constraints" ] ; then
             -p /usr/bin/python3.4 -r global-requirements.txt \
             > $1/upper-constraints.txt
     }
+elif [ "$OWN_PROJECT" == "devstack-plugins-list" ] ; then
+    INITIAL_COMMIT_MSG="Updated from generate-devstack-plugins-list"
+    TOPIC="openstack/devstack/plugins"
+    PROJECTS=openstack-dev/devstack
+    function update {
+        bash -ex tools/generate-devstack-plugins-list.sh $1
+    }
 else
     echo "Unknown project $1" >2
     exit 1

zuul/layout.yaml

@@ -2373,6 +2373,8 @@ projects:
       - gate-dsvm-mongodb-zaqar
       - gate-grenade-dsvm-forward
       - gate-tempest-dsvm-f23
+    periodic:
+      - propose-devstack-plugins-list
 
   - name: openstack-dev/devstack-plugin-cookiecutter
     template: