Merge pull request #12865 from adelez/deflake_interop

Set allow_flakes to true for cloud_to_prod tests
diff --git a/tools/internal_ci/linux/grpc_interop_toprod.sh b/tools/internal_ci/linux/grpc_interop_toprod.sh
index 3d06185..97a7d5d 100755
--- a/tools/internal_ci/linux/grpc_interop_toprod.sh
+++ b/tools/internal_ci/linux/grpc_interop_toprod.sh
@@ -28,5 +28,5 @@
     --cloud_to_prod \
     --cloud_to_prod_auth \
     --prod_servers default gateway_v4 \
-    --use_docker --internal_ci -t -j 12 $@
+    --use_docker --internal_ci --allow_flakes -t -j 12 $@