F18 openshift tdls, remove boto pip install

Remove explicit version dependency for old boto version, as this
won't work with the Fedora packaged cloud-init, and heat no longer
requires this version, so we should use the Fedora boto package

Change-Id: Iaf340b4793fdf7ffc3f9b3d0197ca9f6ba6f42fe
Merge "F18 openshift tdls, remove boto pip install"