The 'security group rule list' command was updated to display the
remote security group name for a security group rule. This was done
via a new 'Remote Security Group' column. The output of the
'security group rule create' and 'security group show' commands was
also updated to include 'remote_security_group' information instead
of the raw 'group' information returned from the API layer.
Change-Id: I5f9600338c8331966d2c658109a24b502c538106
Closes-Bug: #1520003