added call_host_override test
diff --git a/gRPC-Core.podspec b/gRPC-Core.podspec
index f9f9b77..e7cb395 100644
--- a/gRPC-Core.podspec
+++ b/gRPC-Core.podspec
@@ -2080,6 +2080,7 @@
                       'test/core/end2end/tests/bad_ping.cc',
                       'test/core/end2end/tests/binary_metadata.cc',
                       'test/core/end2end/tests/call_creds.cc',
+                      'test/core/end2end/tests/call_host_override.cc',
                       'test/core/end2end/tests/cancel_after_accept.cc',
                       'test/core/end2end/tests/cancel_after_client_done.cc',
                       'test/core/end2end/tests/cancel_after_invoke.cc',