Use ddev config --show-config-location to find out config location

[rfay]

What happened (or feature request):

Currently there's a complex technique used to try to figure out if a config already exists (a deliberate failure). This is fragile and also doesn't currently work right.

Instead, the new ddev config --show-config-location provides the actual config location (or an error return). Please switch to that.

What you expected to happen:

How to reproduce this:

Version: Please include the output of ddev version, docker version and the project's .ddev/config.yaml.

Anything else do we need to know:

Related source links or issues:

Please use a complexity rating of 1-5 (5 is high) for a feature request. (High complexity implies more PR planning)