add host config to solve the issuer not match problem when oidc server behind a revers proxy

[jasine]

#104
#164

[jasine]

i public a package https://luarocks.org/modules/jasine/kong-oidc-forward-host for use before merged

[Darguelles]

Is this repo still maintained? 🤔

[galzetta]

@Darguelles I'm afraid it is not maintained anymore. And this is an issue because I don't see many free alternatives for OIDC plugins for Kong.

[Darguelles]

@galzetta in case you need, I've prepared a functional integration ok Kong + OpenID + Keycloak using this plugin as base, of course I had to update some code to make it work with redis and improve the session management.

https://github.com/blitzrok/kong-oidc-keycloak