Update database array in local.settings.php when running recipes:multisite:init

[ba66e77]

When running blt recipes:multisite:init, BLT prompts for database information and uses that into to setup a database record in box/config.yml but that connection information does not populate the database array in the new site's local.settings.php file. As a result, without modification, the new site connects to the original database.

https://github.com/acquia/blt/blob/44785181bf2038493929d45ebd375b36ae903148/src/Robo/Commands/Generate/MultisiteCommand.php

[bschilt]

This was a frustrating issue to experience, especially when a developer is trying to set up their local dev environment for the first time.

I was able to get around this by adding the DB info into the sites/[sitename]/blt.yml file like this:

drupal:
  db:
    database: [sitename]
    username: [username]
    password: [password]
    host: localhost
    port: 3306

These creds will obviously need to match what's in the mysql_users array in box/config.yml. Now the blt:init:settings command will properly create the local.settings.php file.

I agree that the recipes:multisite:init command should handle the DB credentials, perhaps that command just needs to populate the site specific blt.yml file with the DB array.