Move swift upgrades into its own shell script

The upgrade path becomes complicated as previous variables are stored
and we have to start a clean run.

The best way to achieve this is to separate the run steps out in a shell
script for upgrades only.

Change-Id: Ib2d2c8bad5241779d52cdc9428d7057c770d2d7c

tests/ansible-role-requirements.yml

@@ -49,4 +49,4 @@
 - name: os_previous_swift
   src: https://git.openstack.org/openstack/openstack-ansible-os_swift
   scm: git
-  version: stable/newton
+  version: stable/ocata

tests/test-swift-upgrades.sh

@@ -0,0 +1,100 @@
+#!/usr/bin/env bash
+
+# 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.
+
+# WARNING:
+# This file is use by all OpenStack-Ansible roles for testing purposes.
+# Any changes here will affect all OpenStack-Ansible role repositories
+# with immediate effect.
+
+# PURPOSE:
+# This script executes test Ansible playbooks required for performing
+# an upgrade test of the os_neutron role.
+# Due to the way Ansible caches and handles modules, we need to run
+# separate Ansible runs to ensure the "upgrade" uses the new
+# "neutron_migrations_facts" module, instead of the cached version
+# used when deploying the previous Neutron version.
+
+## Shell Opts ----------------------------------------------------------------
+
+set -e
+
+## Vars ----------------------------------------------------------------------
+
+export WORKING_DIR=${WORKING_DIR:-$(pwd)}
+export ROLE_NAME=${ROLE_NAME:-''}
+
+export ANSIBLE_PARAMETERS=${ANSIBLE_PARAMETERS:-"-vvv"}
+export TEST_PLAYBOOK=$WORKING_DIR/tests/test-upgrade.yml
+export TEST_CHECK_MODE=${TEST_CHECK_MODE:-false}
+export TEST_IDEMPOTENCE=${TEST_IDEMPOTENCE:-false}
+export ANSIBLE_OVERRIDES=$WORKING_DIR/tests/os_swift-overrides.yml
+
+export COMMON_TESTS_PATH="${WORKING_DIR}/tests/common"
+
+echo "ANSIBLE_OVERRIDES: ${ANSIBLE_OVERRIDES}"
+echo "ANSIBLE_PARAMETERS: ${ANSIBLE_PARAMETERS}"
+echo "TEST_PLAYBOOK: ${TEST_PLAYBOOK}"
+echo "TEST_CHECK_MODE: ${TEST_CHECK_MODE}"
+echo "TEST_IDEMPOTENCE: ${TEST_IDEMPOTENCE}"
+
+## Functions -----------------------------------------------------------------
+
+function execute_ansible_playbook {
+
+  export ANSIBLE_CLI_PARAMETERS="${ANSIBLE_PARAMETERS} -e @${ANSIBLE_OVERRIDES}"
+  CMD_TO_EXECUTE="ansible-playbook ${TEST_PLAYBOOK} $@ ${ANSIBLE_CLI_PARAMETERS}"
+
+  echo "Executing: ${CMD_TO_EXECUTE}"
+  echo "With:"
+  echo "    ANSIBLE_INVENTORY: ${ANSIBLE_INVENTORY}"
+  echo "    ANSIBLE_LOG_PATH: ${ANSIBLE_LOG_PATH}"
+
+  ${CMD_TO_EXECUTE}
+
+}
+
+function gate_job_exit_tasks {
+  source "${COMMON_TESTS_PATH}/test-log-collect.sh"
+}
+
+## Main ----------------------------------------------------------------------
+
+# Ensure that the Ansible environment is properly prepared
+source "${COMMON_TESTS_PATH}/test-ansible-env-prep.sh"
+
+# Set gate job exit traps, this is run regardless of exit state when the job finishes.
+trap gate_job_exit_tasks EXIT
+
+# Prepare environment for the initial deploy of previous Swift
+# No upgrading or testing is done yet.
+export ANSIBLE_LOG_PATH="${ANSIBLE_LOG_DIR}/ansible-execute-swift-install.log"
+
+# Execute the setup of Stable/Newton Neutron
+execute_ansible_playbook
+
+# Prepare environment for the upgrade of Swift
+export TEST_PLAYBOOK="${COMMON_TESTS_PATH}/test-install-swift.yml"
+export ANSIBLE_LOG_PATH="${ANSIBLE_LOG_DIR}/ansible-execute-swift-upgrade.log"
+
+# Excute the upgrade of Neutron
+execute_ansible_playbook
+
+# Prepare the environment for the testing of upgraded Swift
+export TEST_PLAYBOOK="${WORKING_DIR}/tests/test-swift-functional.yml"
+export ANSIBLE_LOG_PATH="${ANSIBLE_LOG_DIR}/ansible-execute-swift-upgrade-test.log"
+
+# Execute testing of upgraded Neutron
+execute_ansible_playbook

tests/test-upgrade.yml

@@ -27,6 +27,3 @@
 
 # Install previous swift
 - include: test-install-previous-swift.yml
-
-# Install Swift
-- include: common/test-install-swift.yml

tox.ini

@@ -115,14 +115,13 @@ deps =
     {[testenv:ansible]deps}
 setenv =
     {[testenv]setenv}
-    TEST_PLAYBOOK={toxinidir}/tests/test-upgrade.yml
 commands =
     {[testenv:tests_clone]commands}
     bash -c "if [ ! -d "{toxinidir}/tests/common/previous" ]; then \
                git clone -b stable/ocata https://git.openstack.org/openstack/openstack-ansible-tests \
                  {toxinidir}/tests/common/previous; \
              fi"
-    bash -c "{toxinidir}/tests/common/test-ansible-functional.sh"
+    bash -c "{toxinidir}/tests/test-swift-upgrades.sh"
 
 
 [testenv:func_pypy]