Make tracing work in service manager

services/service_manager/manifest.json

 {
   "manifest_version": 1,
   "name": "service:service_manager",
   "display_name": "Service Manager",
   "capabilities": {
     // NOTE: This manifest is for documentation purposes only. Relevant
     // capability spec is defined inline in the ServiceManager implementation.
     //
     // TODO(rockot): Fix this. We can bake this file into ServiceManager at
     // build time or something. Same with service:catalog.
@@ skipping 14 matching lines @@
       // Clients requesting this class block inbound requests to bind interfaces
       // from other sources who specify wildcard rules in their manifest
       // capability interface sets.
       "service_manager:explicit_class": [ ],
 
       "service_manager:service_manager": [
         "service_manager::mojom::ServiceManager"
       ]
     },
     "required": {
-      "service:service_manager": [ "service_manager:all_users" ]
+      "*": [ "service_manager:service_factory" ],
+      "service:catalog": [ "service_manager:resolver" ],
+      "service:tracing": [ "app" ]
     }
   }
 }