Replace remaining calls to testing.Short where possible. (#110765)

* Replace remaining calls to testing.Short where possible.
* Update style guide.
* Revert change in TestAlertmanager_ExtraDedupStage, as it doesn't work.
* Make TestAlertRulePostExport into integration test.

pkg/tests/apis/provisioning/exportjob_test.go

@@ -16,10 +16,8 @@ import (
 	"github.com/grafana/grafana/pkg/util/testutil"
 )
 
-func TestProvisioning_ExportUnifiedToRepository(t *testing.T) {
-	if testing.Short() {
-		t.Skip("skipping integration test")
-	}
+func TestIntegrationProvisioning_ExportUnifiedToRepository(t *testing.T) {
+	testutil.SkipIntegrationTestInShortMode(t)
 
 	helper := runGrafana(t)
 	ctx := context.Background()