Update example Acquia config file

[geerlingguy]

Issue Type

• Documentation Report

Summary

Someone was asking me about updating the example Acquia config.yml file today. It's probably a good idea to take a glance and make sure the settings in that file jibe with what's currently used in Acquia Cloud, as last time I looked at that file was probably a year or more ago, and bits of the platform have changed.

Note that BLT provides its own overrides, so that's a good starting point—or it might be that I just recommend people take a look at BLT's defaults, and take out the example config from Drupal VM (since I don't have much interest in maintaining a config totally separate from BLT).

[geerlingguy]

BLT's drop-in config.yml is here: https://github.com/acquia/blt/blob/8.x/scripts/drupal-vm/config.yml

[geerlingguy]

Fixed by removing example and replacing with documentation in #1405