fix update user password failure bug

[lepdou]

What's the purpose of this PR

Which issue(s) this PR fixes:

Fix update user's password failure.

For example:
Update user's password from 123 to 123456 by portal user manager. But password will not be changed some times.

The reason is follows：

@Transactional
  public void createOrUpdate(UserPO user) {
    String username = user.getUsername();

    User userDetails = new User(username, passwordEncoder.encode(user.getPassword()), authorities);

    if (userDetailsManager.userExists(username)) {
     // 1. update user's password success.
      userDetailsManager.updateUser(userDetails);
    } else {
      userDetailsManager.createUser(userDetails);
    }

   // 2. the result of finding by username sometimes is still old user object.
    UserPO managedUser = userRepository.findByUsername(username);
    managedUser.setEmail(user.getEmail());
    managedUser.setUserDisplayName(user.getUserDisplayName());

   // 3. save user will recover updated password in step1.
    userRepository.save(managedUser);
  }

The solution is create or update by custom repository.

Brief changelog

XXXXX

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• Update the CHANGES log.

[codecov-commenter]

Codecov Report

Merging #4212 (6bedeba) into master (f4ae484) will decrease coverage by 0.03%.
The diff coverage is 3.33%.

@@             Coverage Diff              @@
##             master    #4212      +/-   ##
============================================
- Coverage     52.58%   52.55%   -0.04%     
- Complexity     2627     2630       +3     
============================================
  Files           484      485       +1     
  Lines         15207    15225      +18     
  Branches       1573     1573              
============================================
+ Hits           7997     8001       +4     
- Misses         6651     6667      +16     
+ Partials        559      557       -2     

Impacted Files	Coverage Δ
...lo/portal/spi/configuration/AuthConfiguration.java	8.33% <0.00%> (ø)
.../spi/springsecurity/SpringSecurityUserService.java	0.00% <0.00%> (ø)
...p/framework/apollo/portal/entity/po/Authority.java	7.69% <7.69%> (ø)
.../framework/apollo/spring/property/SpringValue.java	89.47% <0.00%> (+1.75%)	⬆️
...rk/apollo/spring/property/SpringValueRegistry.java	89.18% <0.00%> (+5.40%)	⬆️

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[nobodyiam]

LGTM