When a cloud image only has root user, deploy wordpress will fail
without the flag since wordpress by default does not allow root user
to deploy artifacts. Adding this flag will allow root and non root
users to be used to deploy wordpress
Change-Id: Icf0a62bdfc5db5d0e14752908477288516143eb9
1. mysql 5.6+ configuration
2. noting supporting ubuntu 16.xx
3. different platform code mixing
4. tags so that you can run selected tasks by role
5. uses openstack superuser theme and posts
6. haproxy used old configuration format
Closes-Bug #1654240
Closes-Bug #1649949
Change-Id: Ibbde92ed4fc18f85d004d54f00d3547c3df8fcc4