Add kubeclients stub methods
Add kubeclients stub methods

Stub methods were added for:
- GET service account
- PUT service account
- GET role binding
- PUT role binding

stoplightio/gitlabhq,axilleas/gitlabhq,mmkassem/gitlabhq,stoplightio/gitlabhq,stoplightio/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,axilleas/gitlabhq,axilleas/gitlabhq,dreampet/gitlab,mmkassem/gitlabhq,iiet/iiet-git,axilleas/gitlabhq,dreampet/gitlab,dreampet/gitlab,iiet/iiet-git,iiet/iiet-git,iiet/iiet-git,dreampet/gitlab,mmkassem/gitlabhq