OSP: instruct users to uncompress the artifact
OSP: instruct users to uncompress the artifact

We've received multiple reports from users who did not uncompress the
OpenStack artifact before trying to use it in their cluster.  Let's
explicitly instruct them to uncompress the artifact before having them
try to use it in a cluster.

vikram-redhat/openshift-docs,vikram-redhat/openshift-docs,vikram-redhat/openshift-docs,vikram-redhat/openshift-docs,vikram-redhat/openshift-docs