Merge branch 'dev' into dev

## 1.2.0

### New Feature	

1. Support postgre sql

2. Change all Chinese names to English

3. Add flink and http task support

4. Cross project dependencies

5. Modify mybatis to mybatisplus, support multy databases.

6. Add export and import definition feaure

7. Github actions ci compile check

8. Add method and parameters comments

9. Add java doc for common module

### Enhancement	

1. Add license and notice files

2. Move batchDelete Process Define/Instance Outside for transactional

3. Remove space before and after login user name

4. Dockerfile optimization

5. Change mysql-connector-java scope to test

6. Owners and administrators can delete schedule

7. DB page rename and background color modification 

8. Add postgre performance monitor

9. Resolve style conflict, recipient cannot tab and value verification

10. Checkbox change background color and env to Chinese

11. Change chinese sql to english

12. Change sqlSessionTemplate singleton and reformat code 

13. The value of loadaverage should be two decimal places

14. Delete alert group need delete the relation of user and alert group

15. Remove check resources when delete tenant

16. Check processInstance state before delete worker group 

17. Add check user and definitions function when delete tenant

18. Delete before check to avoid KeeperException$NoNodeException

### Bug Fixes

1. Fix #1245, make scanCommand transactional 

2. Fix ZKWorkerClient not close PathChildrenCache

3. Data type convert error ，email send error bug fix

4. Catch exception transaction method does not take effect to modify

5. Fix the spring transaction not worker bug

6. Task log print worker log bug fix

7. Fix api server debug mode bug

8. The task is abnormal and task is running bug fix

9. Fix bug: tasks queue length error

10. Fix unsuitable error message

11. Fix bug: phone can be empty

12. Fix email error password

13. Fix CheckUtils.checkUserParams method

14. The process cannot be terminated while tasks in the status submit success

15. Fix too many connection in upgrade or create 

16. Fix the bug when worker execute task using queue. and remove checking

17. Resole verify udf name error and delete udf error 

18. Fix bug: task cannot submit when recovery failover

19. Fix bug: the administrator authorizes the project to ordinary users,but ordinary users cannot see the process definition created by the administrator

20. Fix bug: create dolphinscheduler sql failed

 No newline at end of file

                                                   String receivers, String receiversCc, RunMode runMode,

                                                   Priority processInstancePriority, int workerGroupId, Integer timeout) throws ParseException {

        Map<String, Object> result = new HashMap<>(5);

        // timeout is valid

        // timeout is invalid

        if (timeout <= 0 || timeout > MAX_TASK_TIMEOUT) {

            putMsg(result,Status.TASK_TIMEOUT_PARAMS_ERROR);

            return result;

public enum ZKNodeType {

    /**

     * 0 do not send warning;

     * 1 send if process success;

     * 2 send if process failed;

     * 3 send if process ending;

     * 0 master node;

     * 1 worker node;

     * 2 dead_server node;

     * 3 task_queue node;

     */

    MASTER, WORKER, DEAD_SERVER, TASK_QUEUE;

}

      return sb.toString();

    } finally {

      if (br != null) {

        try {

          br.close();

        } catch (Exception e) {

          logger.error(e.getMessage(), e);

        }

      }

      IOUtils.closeQuietly(br);

    }

  }

   * whether is windows

   * @return true if windows

   */

  public static boolean isWindows() { ;

  public static boolean isWindows() {

    return getOSName().startsWith("Windows");

  }

    @Test

    public void cpuUsage() throws Exception {

        logger.info("cpuUsage : {}", OSUtils.cpuUsage());

        Thread.sleep(1000l);

        Thread.sleep(1000L);

        logger.info("cpuUsage : {}", OSUtils.cpuUsage());

        double cpuUsage = OSUtils.cpuUsage();