* Feat: support serviceaccount in multicluster
(cherry picked from commit 6168af830e)
* Fix: add compatibility & support sa
(cherry picked from commit 0193d74dfa)
* Fix: add multicluster sa test
(cherry picked from commit d445d29649)
* Fix: add test for upgrade func
(cherry picked from commit f4ba55b540)
* Style: format
(cherry picked from commit 0a8645c30c)
Co-authored-by: Yin Da <yd219913@alibaba-inc.com>