ci: support custom TEST_TMPDIR and clang-format (#17020)
ci: support custom TEST_TMPDIR and clang-format (#17020)

Signed-off-by: Long Dai <c54c64cf7043291b886753756d851be401eacd91@foxmail.com>
envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,lyft/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,envoyproxy/envoy,lyft/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,lyft/envoy,envoyproxy/envoy