Add PDK_BUNDLE_IGNORE_CONFIG env support

[fe80]

Hello,

For some context that can be useful to define specific bundle configuration for pdk.

Example: In my case I update pdk with pdk docker images and gitlab-ci, but I also add toml as optional for :test group:

Gemfile:
  optional:
    ':test':
      - gem: 'toml'

When I run pdk update, that create a dependency fail. I would like to ignore test group with BUNDLE_WITHOUT, but I can't if BUNDLE_IGNORE_CONFIG is define.

Regards,

[CLAassistant]

All committers have signed the CLA.

[chelnak]

Added the blocked label for the time being as this is being discussed internally as a feature request.

[gavindidrichsen]

Hi @fe80.

We've been reviewing our issue backlog and found this. Apologies for the long response time on this!

Are you still interested in progressing this? It seems a good idea. To progress this further, however, we'd need more documentation and testing around the change. We'd then be able to add this to our current docs, etc.

[jordanbreen28]

hey @fe80 we really like this change you've proposed.

For now we are going to set the PR to draft, until you have the bandwidth to pick this back up again and add some unit tests and documentation for the code change.

[david22swan]

@fe80 We are gonna close this PR as unmoving, if you ever find the time to come back to it we will be more than happy to review it again and help you get it across the line.

Have a nice Spring