tree-wide: use JSON_ALLOW_EXTENSIONS when disptching at various places

If we want to allow method replies to be extended without this breaking
compat, then we should set this flag. Do so at various method call
replies hence.

Also do it when parsing user/group records, which are expressly
documented to be extensible, as well as the hibernate JSON record.

(cherry picked from commit f0e4244)

src/hibernate-resume/hibernate-resume-config.c

@@ -173,7 +173,7 @@ static int get_efi_hibernate_location(EFIHibernateLocation **ret) {
         if (!e)
                 return log_oom();
 
-        r = json_dispatch(v, dispatch_table, JSON_LOG, e);
+        r = json_dispatch(v, dispatch_table, JSON_LOG|JSON_ALLOW_EXTENSIONS, e);
         if (r < 0)
                 return r;
 

src/nss-resolve/nss-resolve.c

@@ -20,7 +20,7 @@
 #include "strv.h"
 #include "varlink.h"
 
-static JsonDispatchFlags json_dispatch_flags = 0;
+static JsonDispatchFlags json_dispatch_flags = JSON_ALLOW_EXTENSIONS;
 
 static void setup_logging(void) {
         log_parse_environment_variables();

src/shared/group-record.c

@@ -230,7 +230,7 @@ int group_record_load(
         if (r < 0)
                 return r;
 
-        r = json_dispatch(h->json, group_dispatch_table, json_flags, h);
+        r = json_dispatch(h->json, group_dispatch_table, json_flags | JSON_ALLOW_EXTENSIONS, h);
         if (r < 0)
                 return r;
 

src/shared/user-record.c

@@ -1625,7 +1625,7 @@ int user_record_load(UserRecord *h, JsonVariant *v, UserRecordLoadFlags load_fla
         if (r < 0)
                 return r;
 
-        r = json_dispatch(h->json, user_dispatch_table, json_flags, h);
+        r = json_dispatch(h->json, user_dispatch_table, json_flags | JSON_ALLOW_EXTENSIONS, h);
         if (r < 0)
                 return r;
 

src/shared/userdb.c

@@ -199,7 +199,7 @@ static int userdb_on_query_reply(
 
                 assert_se(!iterator->found_user);
 
-                r = json_dispatch(parameters, dispatch_table, 0, &user_data);
+                r = json_dispatch(parameters, dispatch_table, JSON_ALLOW_EXTENSIONS, &user_data);
                 if (r < 0)
                         goto finish;
 
@@ -256,7 +256,7 @@ static int userdb_on_query_reply(
 
                 assert_se(!iterator->found_group);
 
-                r = json_dispatch(parameters, dispatch_table, 0, &group_data);
+                r = json_dispatch(parameters, dispatch_table, JSON_ALLOW_EXTENSIONS, &group_data);
                 if (r < 0)
                         goto finish;
 
@@ -309,7 +309,7 @@ static int userdb_on_query_reply(
                 assert(!iterator->found_user_name);
                 assert(!iterator->found_group_name);
 
-                r = json_dispatch(parameters, dispatch_table, 0, &membership_data);
+                r = json_dispatch(parameters, dispatch_table, JSON_ALLOW_EXTENSIONS, &membership_data);
                 if (r < 0)
                         goto finish;