utility: Update gdb script so gdb runs well in emacs gud package (#2372)
utility: Update gdb script so gdb runs well in emacs gud package (#2372)

Signed-off-by: Joshua Marantz <c3f6b7d9de5243f9f0884ee043fd42ff9df5f177@google.com>

envoyproxy/envoy,sebrandon1/envoy,jrajahalme/envoy,envoyproxy/envoy-wasm,jrajahalme/envoy,eklitzke/envoy,lyft/envoy,envoyproxy/envoy-wasm,eklitzke/envoy,sebrandon1/envoy,envoyproxy/envoy,istio/envoy,lizan/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy,envoyproxy/envoy-wasm,lyft/envoy,lizan/envoy,craffert0/envoy,lizan/envoy,jrajahalme/envoy,dnoe/envoy,envoyproxy/envoy,craffert0/envoy,istio/envoy,eklitzke/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy-wasm,envoyproxy/envoy,envoyproxy/envoy,lizan/envoy,lyft/envoy,istio/envoy,istio/envoy,envoyproxy/envoy,dnoe/envoy,eklitzke/envoy,istio/envoy,envoyproxy/envoy,sebrandon1/envoy,dnoe/envoy,istio/envoy,eklitzke/envoy,dnoe/envoy,craffert0/envoy,envoyproxy/envoy-wasm,lyft/envoy,istio/envoy,lizan/envoy,jrajahalme/envoy,jrajahalme/envoy,lyft/envoy,eklitzke/envoy,sebrandon1/envoy,dnoe/envoy,craffert0/envoy,lyft/envoy,sebrandon1/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy,jrajahalme/envoy,lizan/envoy