Rename health command to info

[jordeu]

Currently we've the command health that it looks like this:

I propose to add also an info section something like these:

    Details
    -----------------------------+------------------------
     Tower API endpoint          | https://api.tower.nf 
     Tower version               | 21.10.3
     Tower API version           | 1.6.0
     CLI version                 | 1.0.0
     CLI minimum API version     | 1.6.0
     Authenticated user          | jordeu

I'm proposing to have only one subcommand called info with both things (instead of health and info) trying to keep the number of commands as minimum as possible.