Issue #55: Move yum install packages to top of bootstrap

Some commands were called before they were installed on the system. This
moves those commands to the top of bootstrap.
Issue #32: Bootstrap will create a rhel repo from a cd

This patch automates copying rpms locally and creating a repo
from the rpm directory.

Check if we are subscribed to RHN. If we are not, attempt to subscribe.
Issue 42: In-progress work on getting LiveCD working for RHEL7

Updated livecd-tools to version used in CentOS. Updated Spencer's
patches that were still needed to apply cleanly.

Not fully working. Seeing error during build about not finding
/etc/selinux/clip/contexts/files/file_contexts
Issue 42: Fix livecd-tools patches