Bulk ingester retry policy (#930) (#948)

* WIP: added backoff policy logic to operations

* all basic key points implemented

* bugfixes

* retry - main implementation done

* working unit test, bugfixes

* more tests

* unit tests done

* refactoring

* more refactoring

* checkstyle

* refactoring and optimizations

Co-authored-by: Laura Trotta <[email protected]>

Author: github-actions[bot]