authenticate: use gRPC for service endpoints (#39)

* authenticate: set cookie secure as default.
* authenticate: remove single flight provider.
* authenticate/providers: Rename “ProviderData” to “IdentityProvider”
* authenticate/providers: Fixed an issue where scopes were not being overwritten
* proxy/authenticate : http client code removed.
* proxy: standardized session variable names between services.
* docs: change basic docker-config to be an “all-in-one” example with no nginx load.
* docs:  nginx balanced docker compose example with intra-ingress settings.
* license:  attribution for adaptation of goji’s middleware pattern.

internal/httputil/client.go

@@ -11,6 +11,8 @@ import (
 	"net/http"
 	"net/url"
 	"time"
+
+	"github.com/pomerium/pomerium/internal/log"
 )
 
 // ErrTokenRevoked signifies a token revokation or expiration error
@@ -59,6 +61,7 @@ func Client(method, endpoint, userAgent string, params url.Values, response inte
 	if err != nil {
 		return err
 	}
+	log.Info().Msgf("%s", respBody)
 
 	if resp.StatusCode != http.StatusOK {
 		switch resp.StatusCode {