OZG-3276 use plaintext local

goofy-server/src/main/resources/application-local.yml

@@ -20,3 +20,8 @@ kop:
     url: http://localhost:9092
     profile-template: /api/userProfiles/%s
     search-template: /api/userProfiles/?searchBy={searchBy}
+
+grpc:
+  client:
+    user-manager:
+      negotiationType: PLAINTEXT
\ No newline at end of file