Explore updating Knapsack reports in Distribution projects

Explore if we need to switch from Knapsack in Charts have QA jobs and in Operator to generate custom reports and not rely on master.json.

Also need to investigate if there are other Distribution projects with QA jobs that needs to be updated.

Related to gitlab-org/gitlab!77873 (comment 806042335) and gitlab-org/quality/pipeline-common!118 (merged)

Quote from gitlab-org/gitlab!77873 (comment 806126281):

1. Remove unnecessary old knapsack variables (set automatically now)
2. Extend knapsack upload report job
3. Add KNAPSACK_GENERATE_REPORT variable for some pipeline type that would be regularly updating the runtimes
4. Add QA_KNAPSACK_REPORT_GCS_CREDENTIALS to pipeline. Present in QA vault