Display + SSH to private IP

Display private IP when present, and default SSH to private IP, except if -e (use-external-ip) is set.
Tests for "Display + SSH to private IP"
Fix
Merge remote-tracking branch 'origin/master' into ipub-private-ip
Fix error in 'authorize_cli_spec' too, error @ 4dfd6c37
Merge pull request #107 from iPublications/ipub-private-ip

Display + SSH to private IP