Adding multi-node DevStack template for Ubuntu

Adding a template that deploys a multi-node OpenStack installation using
DevStack. This template has been tested on Ubuntu and may work as-is on
Debian too.

Note that the security group resources require to use Neutron and Havana
Heat.

Change-Id: Ibdf4fe7407913f75b2253b09639554c013d31c01
Add working F18 WordPress template

Add an updated WordPress_Single_Instance template which works with
F18 guests

Change-Id: I6651163b91709a6ab566f8d6060c4766a1d4603f
F18 WordPress_NoKey fixes

The security group properties must be strings or we get validation
errors, and firewall-cmd rule addition should be permanent

Change-Id: Ia03947690ff8142b6e700c808a898283c7b8d095
Merge "Adding multi-node DevStack template for Ubuntu"
OpenShift Enterprise diskimage-builder elements and heat template

Change-Id: Id082bfe75928715001bd9763edb377c1a1d7d8eb
Adapt WordPress_NoKey to changes in str_replace

Adapt naming of parameters to the str_replace function to implementation
changes in that function so the replacement works correctly. The following
change introduces exact string matching, so we have to change from the
previous python string template based notation:

https://review.openstack.org/#/c/47772

Note: the change to the HOT template depends on the change above being
merged (or gets necessary as soon as this change is merged).

Change-Id: I229bee76771b0b0f691943f9fa8ceaa8393de781
Closes-Bug: #1229741
Add Wordpress_Native F18 HOT example

Add an example of using the native OS::Nova::Server resource,
also this example does not require heat-cfntools, we just use
cloud-init to run the user_data script

Change-Id: I799f790b4428373f43e91b27df3b3cb9ddae149e
Merge "Add Wordpress_Native F18 HOT example"
Merge "Adapt WordPress_NoKey to changes in str_replace"
Merge "OpenShift Enterprise diskimage-builder elements and heat template"
Adding 1 Broker, 1 BSN, 2 Node setup

* refactored the diskimage-builder elements to wait for external
  network connectivity
* packaging the openshift installer in the image