Re-create guest if it doesn't come up right.

Re-create guest if it doesn't come up right.

In some rare cases (mainly centos/rhel after creating the
guest with downburst it does not come up right. It
gets a kernel panic at boot. Usually just turning it off
and then back on again is enough but to be on the safe
side I figured it should be re-created instead. This
insures you don't get hung jobs from a guest that didn't
come up correctly.

Signed-off-by: Sandon Van Ness <sandon@inktank.com>