fix coverage publish script (#7608)
fix coverage publish script (#7608)

#7552 breaks master coverage build.

Risk Level: Low
Testing: cannot be tested via presubmit only
Docs Changes: n/a
Release Notes: n/a

Signed-off-by: Lizan Zhou <739047aeb4f72dac9d1867914b065926e8c1008d@tetrate.io>
istio/envoy,jrajahalme/envoy,lizan/envoy,lyft/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy-wasm,eklitzke/envoy,lizan/envoy,istio/envoy,envoyproxy/envoy,lizan/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy-wasm,eklitzke/envoy,istio/envoy,envoyproxy/envoy,envoyproxy/envoy,lyft/envoy,eklitzke/envoy,envoyproxy/envoy,lizan/envoy,envoyproxy/envoy-wasm,jrajahalme/envoy,istio/envoy,lyft/envoy,lyft/envoy,envoyproxy/envoy,jrajahalme/envoy,istio/envoy,eklitzke/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,lizan/envoy,envoyproxy/envoy,jrajahalme/envoy,lyft/envoy,envoyproxy/envoy,eklitzke/envoy,eklitzke/envoy,jrajahalme/envoy,lyft/envoy,istio/envoy,lizan/envoy,istio/envoy,envoyproxy/envoy,jrajahalme/envoy