[JENKINS-73825] ldap allows insecure configurations

[vwagh-dev]

See JENKINS-73825
In FIPS mode, now LDAP don't allows the insecure configuration. Also it shows the error messages in case of insecure ldap url/ short password

Testing

Manually testing is done with below scenarios

1. Configure insecure ldap url & error should thrown + form data should not be saved ✅
2. Configure secure ldap url & error should thrown + form data should not be saved ✅
3. In advance configuration manager password less than 14 is not allowed ✅
4. CASC configuration unit test to load the ldap configuration i.e. CasCFipsTest ✅
   • When configuration has secure url + valid password length
   • When configuration has insecure url/valid password length CasCFipsTest.configure_ldap_for_invalid
5. UI Integration Test ✅
   • For Insecure ldap server url
   • For invalid manager password size

Submitter checklist

• Make sure you are opening from a topic/feature/bugfix branch (right side) and not your main branch!
• Ensure that the pull request title represents the desired changelog entry
• Please describe what you did
• Link to relevant issues in GitHub or Jira
• Link to relevant pull requests, esp. upstream and downstream changes
• Ensure you have provided tests - that demonstrates feature works or fixes the issue

[rsandell]

Looks good, except for some small nits and cost saving measures.

[PereBueno]

LGTM :)