Fixes: #14466
The OpenSSF scorecard report
https://scorecard.dev/viewer/?uri=github.com/rook/rook
warns about excessive token-permissions in the rook project's github CI
workflows.
This bulk change aims at improving this by
1. adding top-level read permissions where missing for integration tests.
2. adding write permissions as needed for the auto-assign workflow.
3. removing the warned-about and unused create-tag workflow
Signed-off-by: Michael Adam <obnox@samba.org>
Co-authored-by: Blaine Gardner <b.blaine.gardner@gmail.com>