Github user ahgittin commented on the issue:
https://github.com/apache/brooklyn-server/pull/963
note the code at
https://github.com/apache/brooklyn-server/blob/master/locations/jclouds/src/main/java/org/apache/brooklyn/location/jclouds/JcloudsLocation.java#L1037
is unchanged, this is where we (brooklyn) install the supplied data to
`authorized_keys` ourselves, so disabling jclouds seems save---
