Investigate and Fix: DNS_OVERRIDE not working

[unladenSwallow]

In the current state the DNS_OVERRIDE environment var does not seem to be working.

To replicate:

• Run a test that requires DNS_OVERRIDE locally making sure to pass a usable IP value to the environment variable
• Note that the test fails
• Add the DNS IP to your local /etc/hosts file
• Run the test again (locally this time)
• Note that it now passes locally

I specified testing this locally for consistency purposes, but these tests are also failing in the drone builds