dev/ci: upload logs in go tests, integration tests

Created by: bobheadxi

Trying to see what is causing tests to complain codeintel-db is not available. At the moment, not sure what's happening - it seems to be starting fine and then gets shut down before the tests start. https://buildkite.com/sourcegraph/sourcegraph/builds/109177#f66c0d3e-dc9a-4de9-bda5-87b1bdaac66a