Since PostgreSQL is able to use SCRAM as an authentication method we should get rid of suggesting MD5 in our installation guide.
If you are running PG X or more, here are instructions to configure this ....
Need to have engineering verify that we support it.
- deployment/core/getting-started.adoc references MD5 hashed passwords. Update this section with directions and appropriate caveats for supported versions
- Check other references to MD5 in the docs and add SCRAM option if appropriate.