Add new issue label "no stalebot" to be ignored by stalebot. (#3821)
Add new issue label "no stalebot" to be ignored by stalebot. (#3821)

Signed-off-by: Greg Greenway <f58b4fce410ab27c1d5cc4afd1f2a190e9aa65c3@apple.com>
lizan/envoy,lizan/envoy,dnoe/envoy,dnoe/envoy,lyft/envoy,lyft/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy,envoyproxy/envoy-wasm,eklitzke/envoy,istio/envoy,lizan/envoy,istio/envoy,lizan/envoy,lizan/envoy,envoyproxy/envoy,jrajahalme/envoy,envoyproxy/envoy-wasm,lyft/envoy,istio/envoy,envoyproxy/envoy,jrajahalme/envoy,envoyproxy/envoy,lyft/envoy,lyft/envoy,envoyproxy/envoy,envoyproxy/envoy,istio/envoy,dnoe/envoy,eklitzke/envoy,envoyproxy/envoy,istio/envoy,jrajahalme/envoy,envoyproxy/envoy,jrajahalme/envoy,envoyproxy/envoy,envoyproxy/envoy-wasm,eklitzke/envoy,eklitzke/envoy,envoyproxy/envoy,lizan/envoy,envoyproxy/envoy-wasm,envoyproxy/envoy-wasm,jrajahalme/envoy,istio/envoy,lyft/envoy,jrajahalme/envoy,envoyproxy/envoy,eklitzke/envoy,envoyproxy/envoy,envoyproxy/envoy-wasm,istio/envoy,eklitzke/envoy,dnoe/envoy,dnoe/envoy