Remove individual deployment and test env variables
What does this MR do?
Remove individual deployment and test environment variables from .gitlab-ci.yml
We've been using individual deployments for a couple of weeks now without any problems. This commit removes the temporal environment variables that were used to switch between a single deployer pipeline and individual deployer pipelines, basically reverting !1423 (merged)
Also ensures deployments are triggered using 'master' deployer branch.
Related to gitlab-com/gl-infra/delivery#1690 (closed)
Edited by Mayra Cabrera