Make using environment variable based config explicit when running commands

[miketalley]

Currently, when you have the required environment variables set, it will override the hubspot.config.yml settings. This can be a problem if the variables are set unbeknownst to the user and commands are attempted to be run using the hubspot.config.yml settings.

We should look into adding an option to commands to explicitly use the environment variable config like hs watch --use-env or something similar. Research some different options for this.

[drewjenkins]

This would be a potentially breaking change for users right? Since it would now use the hubspot.config.yml instead of their env vars unless they add this flag. We'll need to communicate it and major bump again

[miketalley]

Yes, the change here has the potential to break a setup that is currently using the environment variables because it would require adding the option flag. We have not publicly released/documented/announced this feature so I think we are in the clear here as we make the option required prior to the official release

[TheWebTech]

Appreciate the forethought Andrew. In this case like Mike said i think we can do this safely as env variables have never been documented.