bus-util: support details in CheckAuthorization calls

Extra details for an action can be supplied when calling polkit's
CheckAuthorization method. Details are a list of key/value string pairs.
Custom policy can use these details when making authorization decisions.

src/hostname/hostnamed.c

@@ -434,6 +434,7 @@ static int method_set_hostname(sd_bus_message *m, void *userdata, sd_bus_error *
                         m,
                         CAP_SYS_ADMIN,
                         "org.freedesktop.hostname1.set-hostname",
+                        NULL,
                         interactive,
                         UID_INVALID,
                         &c->polkit_registry,
@@ -486,6 +487,7 @@ static int method_set_static_hostname(sd_bus_message *m, void *userdata, sd_bus_
                         m,
                         CAP_SYS_ADMIN,
                         "org.freedesktop.hostname1.set-static-hostname",
+                        NULL,
                         interactive,
                         UID_INVALID,
                         &c->polkit_registry,
@@ -557,6 +559,7 @@ static int set_machine_info(Context *c, sd_bus_message *m, int prop, sd_bus_mess
                         m,
                         CAP_SYS_ADMIN,
                         prop == PROP_PRETTY_HOSTNAME ? "org.freedesktop.hostname1.set-static-hostname" : "org.freedesktop.hostname1.set-machine-info",
+                        NULL,
                         interactive,
                         UID_INVALID,
                         &c->polkit_registry,