[CSAPI] Connected Systems Client OAuth Integration

[nickgaray]

Connected systems client requires the ability to authenticate via OAuth (OIDC) service to transact with a remote node configured to be secure through OAuth (OIDC) provider.

[nickgaray]

I think we have to understand further the implications of OIDC Authenticators with HttpClient. Is it possible to have an Authenticator that will negotiate a bearer token on behalf of the Connected Systems Client?

https://hc.apache.org/httpcomponents-client-5.5.x/current/httpclient5/apidocs/