Don't "import misc as teuthology"

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Return old-style hostnames from lock_many()

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Fix --unlock

Note to self: clean up user/ctx.owner confusion

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>
Less dangerous hostname mangling

Signed-off-by: Zack Cerza <zack.cerza@inktank.com>