Fix missing identity and authenticator in StartMultipeerReplicator

Author: pasin

servers/ios/TestServer/ContentTypes/StartMultipeerReplicatorRequest.swift

@@ -12,5 +12,7 @@ extension ContentTypes {
         let peerGroupID: String
         let database: String
         let collections: [ReplicationCollection]
+        let identity: MultipeerReplicatorIdentity
+        let authenticator: MultipeerReplicatorCAAuthenticator?
     }
 }

servers/ios/TestServer/Handlers/StartMultipeerReplicator.swift

@@ -18,7 +18,9 @@ extension Handlers {
         var config = ContentTypes.MultipeerReplicatorConfiguration(
             peerGroupID: request.peerGroupID,
             database: request.database,
-            collections: request.collections)
+            collections: request.collections,
+            identity: request.identity,
+            authenticator: request.authenticator)
 
         let id = try dbManager.startMultipeerReplicator(config: config)