Support user core pluggability #1291
Description
Current Limitation
Currently, thunder can only work with it's own user service. It does not support plugging an external user core.
Suggested Improvement
Remove direct dependencies of Thunder gateway components (executors, core authentication services, atomic authentication APIs) to Thunder's user service. Update those to depend on a generic interface. The default implementation of that interface can be based on Thunder's user service. Any external user core can be plugged to thunder by implementing that generic interface.
Version
No response