Adding Integration Tests for mysql_db module

Adding the following Test Coverage for RedHat and Debian OS:

 - Use mysql_db module to create, delete databases using different encoding.
 - Backup/Restore databases using different file format: sql, gz and bz2.
 - Create and delete databases using different user privilege.
 - Assert database creation, deleting and content using system commands.

test/integration/roles/setup_mysql_db/tasks/main.yml

@@ -0,0 +1,33 @@
+# setup code for the mysql_db module
+# (c) 2014,  Wayne Rosario <wrosario@ansible.com>
+
+# This file is part of Ansible
+#
+# Ansible is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Ansible is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Ansible.  If not, see <http://www.gnu.org/licenses/>.
+
+# ============================================================
+- include_vars: '{{ ansible_os_family }}.yml' 
+
+- name: install mysqldb_test rpm dependencies
+  yum: name={{ item }} state=latest 
+  with_items: mysql_packages
+  when: ansible_pkg_mgr  ==  'yum'
+
+- name: install mysqldb_test debian dependencies 
+  apt: name={{ item }} state=latest 
+  with_items:  mysql_packages
+  when: ansible_pkg_mgr  ==  'apt'
+
+- name: start mysql_db service if not running
+  service: name={{ mysql_service }} state=started