Chore: Exclude integration tests from running on test-backend step (#50359)

* Chore: Exclude integration tests from running on test-backend step

* Remove -v from go test command

* Add check to skip integration tests before each integration test

* Try to restart pipeline

* Retrying to make pipeline run

pkg/tsdb/mysql/mysql_test.go

@@ -26,6 +26,9 @@ import (
 // use to verify that the generated data are visualized as expected, see
 // devenv/README.md for setup instructions.
 func TestIntegrationMySQL(t *testing.T) {
+	if testing.Short() {
+		t.Skip("skipping integration test")
+	}
 	// change to true to run the MySQL tests
 	runMySQLTests := false
 	// runMySqlTests := true