CI: Test that we can produce artifacts with gcc#397

Merged

mum4k merged 14 commits intoenvoyproxy:masterfrom oschaaf:oschaaf-gcc-ci-task

Jul 7, 2020

Commits on Jul 1, 2020

Update Envoy to 5c553261d14730af5a2c290c4b3687ae667a65db
oschaaf
committed

Commits on Jul 2, 2020

Update Envoy to f6b86a58b264b46a57d71a9b3b0989b2969df408
oschaaf
committed

Commits on Jul 7, 2020

Merge remote-tracking branch 'upstream/master' into oschaaf-gcc-ci-task
oschaaf
committed