connection:info does not correctly report database name

[nikanderson]

Version 3.1.2

terminus connection:info --fields=mysql_database returns

 ---------------- -- 
  MySQL Database     
 ---------------- -- 

and terminus connection:info --fields=mysql_command omits the database at the end of the command.

I suspect this is an error here:

terminus/src/Models/Environment.php

Line 284 in e9666f0

$database = $env_vars['DATABASE'] ?? null;

Introduced recently by this PR #2403

The conversation regarding that PR suggests the env_var should be DB_NAME rather than DATABASE

Thank you!

[namespacebrian]

Tracking internally as BUGS-5781