Fetch knapsack report before test execution

What does this MR do?

Check-list

Fetches knapsack report before test execution for smoke and reliable tests to avoid fetching updated report when retrying a job.

Fixes problem described: gitlab-org/gitlab#361733 (comment 942674941)

TODO: Update rake task to provide report names as arguments and fetch reports for all parallel tests

Part of: gitlab-org/gitlab#361733 (closed)

• Verify the change in all affected pipelines. Tested in: https://ops.gitlab.net/gitlab-org/quality/staging/-/pipelines/1199262