Use race="off" mode instead of disabling race feature

pkg/master/BUILD

@@ -120,8 +120,8 @@ go_test(
         "master_test.go",
     ],
     embed = [":go_default_library"],
-    features = ["-race"],
     importpath = "k8s.io/kubernetes/pkg/master",
+    race = "off",
     deps = [
         "//pkg/api/legacyscheme:go_default_library",
         "//pkg/api/testapi:go_default_library",

staging/src/k8s.io/client-go/tools/cache/BUILD

@@ -23,8 +23,8 @@ go_test(
         "undelta_store_test.go",
     ],
     embed = [":go_default_library"],
-    features = ["-race"],
     importpath = "k8s.io/client-go/tools/cache",
+    race = "off",
     deps = [
         "//vendor/github.com/google/gofuzz:go_default_library",
         "//vendor/k8s.io/api/core/v1:go_default_library",