Add hard-coded /hot_restart_version test (#3832)
Add hard-coded /hot_restart_version test (#3832)

Signed-off-by: James Buckland <2c2cc139605d55b4d558cccbb67e11a1dad02103@google.com>
jrajahalme/envoy,eklitzke/envoy,envoyproxy/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy-wasm,lyft/envoy,lizan/envoy,istio/envoy,istio/envoy,envoyproxy/envoy,eklitzke/envoy,envoyproxy/envoy-wasm,dnoe/envoy,jrajahalme/envoy,istio/envoy,jrajahalme/envoy,envoyproxy/envoy,lizan/envoy,lizan/envoy,envoyproxy/envoy,eklitzke/envoy,lizan/envoy,dnoe/envoy,envoyproxy/envoy,jrajahalme/envoy,envoyproxy/envoy,eklitzke/envoy,envoyproxy/envoy,eklitzke/envoy,eklitzke/envoy,istio/envoy,istio/envoy,envoyproxy/envoy-wasm,lyft/envoy,jrajahalme/envoy,envoyproxy/envoy-wasm,dnoe/envoy,envoyproxy/envoy-wasm,lyft/envoy,lyft/envoy,jrajahalme/envoy,dnoe/envoy,istio/envoy,lyft/envoy,envoyproxy/envoy,lizan/envoy,envoyproxy/envoy,dnoe/envoy,istio/envoy,lizan/envoy,envoyproxy/envoy,envoyproxy/envoy-wasm,lyft/envoy,envoyproxy/envoy,envoyproxy/envoy