add vm1 to the list of hosts
actually use the ssh control session
Merge pull request #22 from djmitche/add-vm1

Add vm1
add nine.buildbot.net to buildbot.net zone

* also remove nine.buildbot.buildbot.net
* remove TXT record for nine.buildbot.net
Merge pull request #23 from sa2ajj/add-nine-to-dns

add nine.buildbot.net to buildbot.net zone
wip