Use a custom git checkout in developer mode

This patch allows a developer to customise the code for
keystone, then test the changes when executing any of
the tox tests we implement.

The workflow means that by default the git_repo will be cloned from
upstream (this ensures gating continues to work). If the developer
specifies a "keystone_dev_local_directory" then the repo will not be
cloned, and it assumes the developer has already cloned and edited that
repo. A clone can be forced using "keystone_dev_force_clone" to "True".

Change-Id: Ibb666a803e73b50e3ee1918e633a9bbb84b084da

tests/group_vars/keystone_all.yml

@@ -0,0 +1,18 @@
+---
+# Copyright 2016, Rackspace US, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+lxc_container_bind_mounts:
+  - host_directory: "{{ keystone_dev_local_directory | default('/opt/keystone') }}"
+    container_directory: "/opt/keystone"

tests/os_keystone-overrides.yml

@@ -16,6 +16,10 @@
 # (c) 2016 Donovan Francesco <donovan.francesco@is.co.za>
 # (c) 2016 Paul Stevens <paul.stevens@is.co.za>
 
+keystone_git_repo: "file:///opt/keystone"
+keystone_dev_clone_repo: "https://git.openstack.org/openstack/keystone"
+keystone_dev_force_clone: False
+
 tempest_run: yes
 
 tempest_plugins:

tests/test-clone-repo.yml

@@ -0,0 +1,26 @@
+---
+# Copyright 2017, Rackspace US, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+- name: Clone keystone repository if it doesn't exist
+  hosts: localhost
+  user: root
+  pre_tasks:
+    - name: Clone the repo
+      git:
+        repo: "{{ keystone_dev_clone_repo }}"
+        dest: "{{ keystone_dev_local_directory | default('/opt/keystone') }}"
+        version: "{{ keystone_dev_git_branch | default('master') }}"
+      register: git_clone
+      until: git_clone|success

tests/test-upgrade-post.yml

@@ -19,6 +19,9 @@
 # Install upgrade benchmarking
 - include: test-benchmark-keystone-upgrade.yml
 
+# Update repo
+- include: test-clone-repo.yml
+
 # Install Keystone
 - include: common/test-install-keystone.yml
 

tests/test-upgrade-pre.yml

@@ -22,6 +22,11 @@
 # Prepare the host
 - include: common/test-prepare-host.yml
 
+# Clone the repo
+- include: test-clone-repo.yml
+  vars:
+    keystone_dev_git_branch: "stable/ocata"
+
 # Prepare the containers
 - include: common/test-prepare-containers.yml
 

tests/test.yml

@@ -19,6 +19,12 @@
 # Prepare the host
 - include: common/test-prepare-host.yml
 
+# Clone repository
+- include: test-clone-repo.yml
+  when: >
+    keystone_dev_local_directory is not defined or
+    keystone_dev_force_clone
+
 # Prepare the containers
 - include: common/test-prepare-containers.yml