Enable role testing and make structure ansible-galaxy compatible

This patch adds the bits needed to implement automated syntax/lint
role testing. It also moves the role into the base repository so
that the role becomes fully compatible with ansible-galaxy to
improve the role's consumability.

Change-Id: Ia79cd5dedbbe50dfdf46688830a989ff0897832a

run_tests.sh

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+#!/usr/bin/env bash -e -v -x
+# Copyright 2015, 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.
+
+ROLE_NAME=$(basename $(pwd))
+
+pushd tests
+  ansible-playbook -i inventory --syntax-check --list-tasks test.yml -e rolename=${ROLE_NAME}
+popd
+
+ansible-lint */*yml

tests/ansible.cfg

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+[defaults]
+roles_path = ../..

tests/inventory

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+[all]
+localhost ansible_connection=local

tests/test.yml

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+---
+# Copyright 2015, 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: Playbook for role testing
+  hosts: localhost
+  roles:
+    - role: "{{ rolename }}"