Disable TestConnectionAttributes in mariadb env

Author: Daemonxiao

Diff for: driver_test.go

@@ -3232,6 +3232,14 @@ func TestConnectionAttributes(t *testing.T) {
 
 	dbt := &DBTest{t, db}
 
+	var version string
+	if err := dbt.db.QueryRow("SELECT @@version").Scan(&version); err != nil {
+		dbt.Fatalf("%s", err.Error())
+	}
+	if strings.Contains(strings.ToLower(version), "mariadb") {
+		t.Skip(`TODO: Support adding connection attributes in MariaDB`)
+	}
+
 	var attrValue string
 	queryString := "SELECT ATTR_VALUE FROM performance_schema.session_account_connect_attrs WHERE PROCESSLIST_ID = CONNECTION_ID() and ATTR_NAME = ?"
 	rows := dbt.mustQuery(queryString, connAttrClientName)