ci: report test coverage to coveralls.io

This records test coverage for the amd64 no race tests and uploads the
results to coveralls.io.

Updates #cleanup

Signed-off-by: Ox Cart <ox.to.a.cart@gmail.com>

tool/gocross/gocross-wrapper.sh

@@ -8,7 +8,7 @@
 
 set -euo pipefail
 
-if [[ "${CI:-}" == "true" ]]; then
+if [[ "${CI:-}" == "true" && "${NOBASHDEBUG:-}" != "true" ]]; then
     set -x
 fi