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/log/log.go

@@ -10,11 +10,12 @@ import (
 )
 
 // Logger is the global logger.
-var Logger = zerolog.New(os.Stderr).With().Timestamp().Logger()
+var Logger = zerolog.New(os.Stdout).With().Timestamp().Logger()
 
 // SetDebugMode tells the logger to use standard out and pretty print output.
 func SetDebugMode() {
 	Logger = Logger.Output(zerolog.ConsoleWriter{Out: os.Stdout})
+	// zerolog.SetGlobalLevel(zerolog.InfoLevel)
 }
 
 // With creates a child logger with the field added to its context.