Add RELEASE-VERSION for autotest 0.15.0

Signed-off-by: Lucas Meneghel Rodrigues <lmr@redhat.com>
do not attempt to use install server when profile is not available

In cases when SUT does not have valid profile or is not on
install server we properly mark available profile as N/A, but in
that case we should not attempt to install with N/A.

Signed-off-by: Julius Gawlas <julius.gawlas@hp.com>