Added ssh remote_cmd option. Sometimes we want to run an interactive command against a remote host, for
example nsenter to run a shell inside a running docker container
added docs to def ssh
Merge pull request #42 from ministryofjustice/add_remote_cmd_option

Added ssh remote_cmd option. Sometimes we want to run an interactive com...
Add metadata on AWS box creation
Set hostname when creating servers
Put the hostname in /etc/hosts

Salt will manage this file later, but make `hostname -f` and `sudo` not
complain until then
Force minion id to be a string, not a unicode string
Abstract AWS tagging of env/project to api.py