Fix GCP environment variable usage

[gfting]

Currently, using the JSON as a string can lead to errors and inconsistencies. We should instead factor out individual properties into their own environment variables, as Dmitry suggested.

[semenodp]

@gfting i will take this one

[gfting]

Thanks! I think after this is merged in, then we can merge in #630.

[aadibajpai]

Currently, using the JSON as a string can lead to errors and inconsistencies. We should instead factor out individual properties into their own environment variables, as Dmitry suggested.

can't we just put the env var base64 encoded and then decode it from the env var? that's what I do at https://github.com/aadibajpai/VandyPurger/blob/master/bot.py#L24 for using the Google Sheets API and it works well enough

[leonm1]

I'm not sure I agree with splitting up the GCP service account env var, as the properties come from a service account JSON config file download and can't be used separately.

base64 encoding is a good option, although will be just as long, only prevents weird newline issues depending on what format you're keeping the env var.

[semenodp]

Aren't the properties consist though? It's just seems unnatural to have entire json as env variable