[ci] Optimizing pipeline (#5001)

* [DO NOT MERGE] Optimizing pipeline

* add stages

* remove lock for tests

* return locked

* empty commit for pipeline rerun

* add comment about DAG

* Update .gitlab-ci.yml

Co-authored-by: Denis Pisarev <[email protected]>

* Update .gitlab-ci.yml

Co-authored-by: Denis Pisarev <[email protected]>

* Update .gitlab-ci.yml

Co-authored-by: Denis Pisarev <[email protected]>

* Update .gitlab-ci.yml

Co-authored-by: Denis Pisarev <[email protected]>

* Update .gitlab-ci.yml

Co-authored-by: Denis Pisarev <[email protected]>

* Update .gitlab-ci.yml

Co-authored-by: Denis Pisarev <[email protected]>

* Update .gitlab-ci.yml

Co-authored-by: Denis Pisarev <[email protected]>

* Update .gitlab-ci.yml

Co-authored-by: Denis Pisarev <[email protected]>

* Update .gitlab-ci.yml

Co-authored-by: Denis Pisarev <[email protected]>

Co-authored-by: Denis Pisarev <[email protected]>