Drone: Always have `image_pull_secrets` (#55530)
Having it doesn't prevent pulling any images, so it's easier if it's everywhere
(cherry picked from commit a44c0040a9)
Co-authored-by: Julien Duchesne <julien.duchesne@grafana.com>
* Make build and test steps run in parallel
* Make tests and builds run on different pipelines
* Make test-backend depend on initialize
* Rename
* Create standalone integration tests pipeline (#41730)
* Remove unused variables
* Extract grabpl download as separate step
* Change image to alpine
* Change image to curlimage
* Change image to alpine-curl
* Extract lint-drone step
* Add lint-drone to release and main pipelines
* Rename lint_drone to lint_drone_step
* Sign drone