chore: add parameter parsing for v2 retries configuration

See merge request !2063



Merged-by: Jaime Martinez <jmartinez@gitlab.com>
Approved-by: Hayley Swimelar <hswimelar@gitlab.com>
Approved-by: Jaime Martinez <jmartinez@gitlab.com>
Co-authored-by: Pawel Rozlach <prozlach@gitlab.com>