Extend special-user-role to support different values for target databases

[shubham-mable]

I'm trying to replicate my GCP cloudSQL to Oracle's Postgres Service .
Problem is both use different special user role to invoke superuser level commands. Oracle uses oci_admin_role.

The current arch does not allows us to pass different values for different databases in same request. So my pg_easy_replicate config_check fails. Is there any way to fix this please?

I'm kind of in hurry and need to migrate my production ASAP so any help here will be really appreciated..

[shubham-mable]

I have created a fork with the said changes and let me know if I should create a PR for this.

[shayonj]

Please feel free to propose a PR, thanks!