Add ini_manage module.

This is to support salt 2014.1, as the module is not supported in that version yet.

This is copied from https://github.com/CSSCorp/openstack-automation/blob/icehouse-json/Openstack_Havana/file/_modules/ini_manage.py
Implemented mysql init sls.

This is currently a copy of https://github.com/CSSCorp/openstack-automation/blob/icehouse-json/Openstack_Havana/file/mysql/init.sls