🏃 Disable golangs parallel testing

According to onsi/ginkgo#280 this doesn't seem
to be properly supported. If we want parallelization, we should use
ginkgos built-in mechanism for that.

hack/test-all.sh

@@ -22,17 +22,16 @@ setup_envs
 
 header_text "running go test"
 
-# TODO(directxman12): enable the race detector once the LeaderElector race condition is resolved in client-go
-go test ${MOD_OPT} ./... -parallel 4
+go test -race ${MOD_OPT} ./...
 
 header_text "running coverage"
 
 # Verify no coverage regressions have been introduced.  Remove the exception list from here
 # once the coverage has been brought back up
-if [[ ! $(go test ${MOD_OPT} ./pkg/...  -coverprofile cover.out -parallel 4 | grep -v "coverage: 100.0% of statements" | grep "controller-runtime/pkg " | grep -v "controller-runtime/pkg \|controller-runtime/pkg/recorder \|pkg/cache\|pkg/client \|pkg/event \|pkg/client/config \|pkg/controller/controllertest \|pkg/reconcile/reconciletest \|pkg/test ") ]]; then
+if [[ ! $(go test ${MOD_OPT} ./pkg/...  -coverprofile cover.out | grep -v "coverage: 100.0% of statements" | grep "controller-runtime/pkg " | grep -v "controller-runtime/pkg \|controller-runtime/pkg/recorder \|pkg/cache\|pkg/client \|pkg/event \|pkg/client/config \|pkg/controller/controllertest \|pkg/reconcile/reconciletest \|pkg/test ") ]]; then
 echo "ok"
 else
-go test ${MOD_OPT} ./pkg/...  -coverprofile cover.out -parallel 4 | grep -v "coverage: 100.0% of statements" | grep "controller-runtime/pkg " | grep -v "controller-runtime/pkg \|controller-runtime/pkg/recorder \|pkg/cache\|pkg/client \|pkg/event \|pkg/client/config \|pkg/controller/controllertest \|pkg/reconcile/reconciletest \|pkg/test "
+go test ${MOD_OPT} ./pkg/...  -coverprofile cover.out | grep -v "coverage: 100.0% of statements" | grep "controller-runtime/pkg " | grep -v "controller-runtime/pkg \|controller-runtime/pkg/recorder \|pkg/cache\|pkg/client \|pkg/event \|pkg/client/config \|pkg/controller/controllertest \|pkg/reconcile/reconciletest \|pkg/test "
 echo "missing test coverage"
 exit 1
 fi