Migration from GCloud SDK

[kidynamit]

Currently, gcloud sdk CLI is a prerequisite for tesserarius. The problem with this is that this python application may stand alone or be ran natively as part of the bastion server project in the long-term; ideally it should.

A migration to use google-api-python-client is necessary for gcloud calls. This will mean that a GCloud Service Account has to be created for specifically for the purposes of this project. Initial permissions for this service account may include:

• iam.roles.get
• iam.roles.list
• iam.serviceAccountKeys.list
• iam.serviceAccounts.get
• iam.serviceAccounts.getIamPolicy
• iam.serviceAccounts.list
• iam.serviceAccounts.setIamPolicy