Backport of fix: prevent graceful shutdown errors from killing Envoy proxy immediately into release/1.8.x#1073

hc-github-team-consul-core wants to merge 1 commit intorelease/1.8.xhashicorp/consul-dataplane:release/1.8.xfrom

backport/spulluri/fixing_bugs_dp/mentally-sunny-woodcockhashicorp/consul-dataplane:backport/spulluri/fixing_bugs_dp/mentally-sunny-woodcockCopy head branch name to clipboard