Standalone Docker Machine driver for OpenStack

docker-machine folks have designed a driver API to be able
to plugin external drivers:
https://github.com/docker/machine/issues/1626

There is existing code in that repo, however driver is outdated,
we should take over that code, update to latest dependencies
(gophercloud/gophercloud), make it work with minikube etc.

Change-Id: I3fb035a39243ad135ff5513f8a8b651a5fd13970

gerrit/acls/openstack/docker-machine-openstack.config

@@ -0,0 +1,14 @@
+[access "refs/heads/*"]
+abandon = group docker-machine-openstack-core
+label-Code-Review = -2..+2 group docker-machine-openstack-core
+label-Workflow = -1..+1 group docker-machine-openstack-core
+
+[access "refs/tags/*"]
+pushSignedTag = group docker-machine-openstack-release
+
+[receive]
+requireChangeId = true
+requireContributorAgreement = true
+
+[submit]
+mergeContent = true

gerrit/projects.yaml

@@ -3537,6 +3537,9 @@
     - translate
 - project: openstack/doc8
   description: Style checker for sphinx (or other) rst documentation.
+- project: openstack/docker-machine-openstack
+  description: Standalone Docker Machine driver for OpenStack
+  upstream: https://github.com/dims/docker-machine-openstack.git
 - project: openstack/docs-specs
   groups:
     - openstack-manuals

gerritbot/channels.yaml

@@ -738,6 +738,7 @@ openstack-golang:
     - change-merged
     - x-vrif-minus-2
   projects:
+    - openstack/docker-machine-openstack
     - openstack/golang-client
     - openstack/golang-commons
   branches:

jenkins/jobs/projects.yaml

@@ -4052,6 +4052,12 @@
       - python-jobs
       - pypi-jobs
 
+- project:
+    name: docker-machine-openstack
+
+    jobs:
+      - golang-jobs
+
 - project:
     name: docs-specs
 

zuul/layout.yaml

@@ -9096,6 +9096,11 @@ projects:
       - name: python35-jobs
       - name: publish-to-pypi
 
+  - name: openstack/docker-machine-openstack
+    template:
+      - name: merge-check
+      - name: golang-jobs
+
   - name: openstack/docs-specs
     template:
       - name: merge-check