set db connection timeout to 1 minute

Author: derek-bh

src/main/java/com/pangdata/apps/monitor/MysqlMariaDBMonitor.java

@@ -330,6 +330,7 @@ private static Connection getConn() throws Exception {
     try {
     if (conn == null || conn.isClosed()) {
       Class.forName(JDBC_DRIVER);
+      DriverManager.setLoginTimeout(60);
       conn = DriverManager.getConnection(DB_URL, USER, PASS);
       initVariables();
     }