Make QPS server builder customizeabled
diff --git a/test/cpp/qps/BUILD b/test/cpp/qps/BUILD
index e7d093c..b958c75 100644
--- a/test/cpp/qps/BUILD
+++ b/test/cpp/qps/BUILD
@@ -34,11 +34,13 @@
         "qps_worker.cc",
         "server_async.cc",
         "server_sync.cc",
+        "qps_server_builder.cc",
     ],
     hdrs = [
         "client.h",
         "qps_worker.h",
         "server.h",
+        "qps_server_builder.h",
     ],
     deps = [
         ":histogram",
@@ -55,6 +57,10 @@
         "//test/core/util:gpr_test_util",
         "//test/core/util:grpc_test_util",
         "//test/cpp/util:test_util",
+        "//test/cpp/util:test_config",
+    ],
+    external_deps = [
+        "gflags",
     ],
 )