Description of problem:
================================
See bug 1255779 for some background, basically going through a successful first deployment, deleting the hosts, re-discovering the hosts, and trying to work through a second seccessfull deployment results in an error.  It appears that the known hosts file with its ssh fingerprints needs to be wiped at some point in the delete process, or maybe when doing the ssh commands, we purposely don't add the fingerprint to the known_hosts file?

See https://bugzilla.redhat.com/show_bug.cgi?id=1255779#c6 specifically.


Version-Release number of selected component (if applicable):
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0824 iso


How reproducible:
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200%