Add debug info for fetch feed

paddle/scripts/paddle_build.sh

@@ -313,7 +313,9 @@ function run_test() {
     Running unit tests ...
     ========================================
 EOF
-        ctest --output-on-failure
+        echo $http_proxy
+        echo $https_proxy
+        ctest -V
         # make install should also be test when unittest
         make install -j `nproc`
         pip install /usr/local/opt/paddle/share/wheels/*.whl