Provide example F18 NoKey example

F18 requires some firewalld magic to enable http

Change-Id: I3e8ac256ee09af68d772b23690ed1ed368e04938
Merge "Provide example F18 NoKey example"
Add F17, F18, F19, U12 subdirectories for templates

This change makes it possible for us to properly maintain example templates
for various distributions by organizing them into subdirectories.

Change-Id: I06e4d24cae83330af97870bab1e6795999218d1e
Add a heat-cfntools element for openshift-origin

heat-cfntools from the tripleo-image-elements repo is a bit heavyweight.

Instead this element simply installs the latest repo package of heat-cfntools
and symlinks to /opt/aws/bin.

Change-Id: I5a0ec433c352f3ac0bb415381c7e41d4370d1e85
Wordpress NoKey template for F19

Example F19 WordPress NoKey template

Note mariadb changed and the upstream images do not ship with
firewalld enabled, but instead all incoming connections are blocked.

Change-Id: Icdd9c90bb5a3174bcae65cdc8eceadb4a11ed900
Adding HOT WordPress_NoKey sample

Adding WordPress_NoKey sample for F18 based on the same
CFN sample.
The HOT sample uses a new function str_replace to simplify the definition
of the instance init script. More cleanup can be done as soon as the
native compute instance resource becomes available.

Note: the new sample depends on change https://review.openstack.org/41461
in the heat github repository for processing the str_replace function.

Change-Id: Idc1986b0cca08d094079b83653967bba14d07a7b
Fix broken URL references

Some templates still reference the old URL, before the
templates got categorised by Fedora version.

Change-Id: Ie76c8f982b3254f31d7f213110796f5e6371dd72
Adding OSE diskimage-builder elements and heat template