Added OIDC operations

Add the following APIs for the OIDC flow;

1. https://<apic>/.well-known/openid-configuration
2. https://<apic>/.well-known/jwks.json
3. https://<apic>/oauth2/v3/userinfo?scope=openid%20email%20profile
> we need to validate the scope params against what is allowable in the JWT token