feat(authn-oidc): use full urls for login callback/logout options

internal/proxy/director/layer/authn/oidc/client_options.go

@@ -2,6 +2,7 @@ package oidc
 
 import (
 	"context"
+	"net/http"
 
 	"github.com/coreos/go-oidc/v3/oidc"
 )
@@ -14,6 +15,7 @@ type ClientOptions struct {
 	Scopes          []string
 	AuthParams      map[string]string
 	SkipIssuerCheck bool
+	HTTPClient      *http.Client
 }
 
 type ClientOptionFunc func(*ClientOptions)
@@ -63,9 +65,16 @@ func WithProvider(provider *oidc.Provider) ClientOptionFunc {
 	}
 }
 
+func WithHTTPClient(client *http.Client) ClientOptionFunc {
+	return func(opt *ClientOptions) {
+		opt.HTTPClient = client
+	}
+}
+
 func NewClientOptions(funcs ...ClientOptionFunc) *ClientOptions {
 	opt := &ClientOptions{
-		Scopes: []string{oidc.ScopeOpenID, "profile"},
+		Scopes:     []string{oidc.ScopeOpenID, "profile"},
+		HTTPClient: http.DefaultClient,
 	}
 
 	for _, f := range funcs {