Update mysql java connector version to 8.4.0 (matching version for MySQL 8.4)

[sureshanaparti]

Description

This PR updates mysql java connector version to 8.4.0 (matching version for MySQL 8.4). It's better to use connector version matching with the server family for full support and stability.

Doc PR: apache/cloudstack-documentation#629

MySQL 8.0 is EOL April 2026.

References:
MySQL 8.4 Release Notes - https://dev.mysql.com/doc/relnotes/mysql/8.4/en/
MySQL 8.4 Deprecation/Removal - https://dev.mysql.com/doc/relnotes/mysql/8.4/en/news-8-4-0.html#mysqld-8-4-0-deprecation-removal

Authentication Plugins:
caching_sha2_password is the default authentication plugin from MySQL 8.4. mysql_native_password authentication plugin is deprecated as of MySQL 8.0.34, disabled by default in MySQL 8.4, and removed as of MySQL 9.0.0.

caching_sha2_password - https://dev.mysql.com/doc/refman/8.4/en/caching-sha2-pluggable-authentication.html
mysql_native_password - https://dev.mysql.com/doc/refman/8.4/en/native-pluggable-authentication.html

MySQL EOL - https://endoflife.date/mysql

Types of changes

• Breaking change (fix or feature that would cause existing functionality to change)
• New feature (non-breaking change which adds functionality)
• Bug fix (non-breaking change which fixes an issue)
• Enhancement (improves an existing feature and functionality)
• Cleanup (Code refactoring and cleanup, that may add test cases)
• Build/CI
• Test (unit or integration test code)

Feature/Enhancement Scale or Bug Severity

Feature/Enhancement Scale

• Major
• Minor

Bug Severity

• BLOCKER
• Critical
• Major
• Minor
• Trivial

Screenshots (if appropriate):

How Has This Been Tested?

How did you try to break this feature and the system with this change?

[sureshanaparti]

@blueorangutan package

[blueorangutan]

@sureshanaparti a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 16.25%. Comparing base (e22f842) to head (097cd1e).
⚠️ Report is 49 commits behind head on 4.20.

Additional details and impacted files

@@            Coverage Diff            @@
##               4.20   #12640   +/-   ##
=========================================
  Coverage     16.25%   16.25%           
- Complexity    13420    13425    +5     
=========================================
  Files          5662     5662           
  Lines        500144   500167   +23     
  Branches      60729    60740   +11     
=========================================
+ Hits          81300    81325   +25     
+ Misses       409760   409755    -5     
- Partials       9084     9087    +3     

Flag	Coverage Δ
uitests	4.15% <ø> (-0.01%)	⬇️
unittests	17.11% <ø> (+<0.01%)	⬆️

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[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ el10 ✔️ debian ✔️ suse15. SL-JID 16828

[sureshanaparti]

@blueorangutan test

[blueorangutan]

@sureshanaparti a [SL] Trillian-Jenkins test job (ol8 mgmt + kvm-ol8) has been kicked to run smoke tests

[blueorangutan]

[SF] Trillian Build Failed (tid-15451)

[blueorangutan]

[SF] Trillian Build Failed (tid-15452)

[blueorangutan]

[SF] Trillian Build Failed (tid-15456)

[sureshanaparti]

@blueorangutan package

[blueorangutan]

@sureshanaparti a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

[blueorangutan]

[SF] Trillian test result (tid-15518)
Environment: kvm-ol9 (x2), zone: Advanced Networking with Mgmt server ol9
Total time taken: 53272 seconds
Marvin logs: https://github.com/blueorangutan/acs-prs/releases/download/trillian/pr12640-t15518-kvm-ol9.zip
Smoke tests completed. 141 look OK, 0 have errors, 0 did not run
Only failed and skipped tests results shown below:

Test	Result	Time (s)	Test File

[vladimirpetrov]

LGTM based on manual testing. Tested upgrades from mysql 8.0 with Oracle Linux 8, 9, Rocky Linux 8, 9, Alma Linux 8, 9 and Ubuntu 24 and fresh install with Oracle Linux 8 and 9.

[sureshanaparti]

@blueorangutan package

[blueorangutan]

@sureshanaparti a [SL] Jenkins job has been kicked to build packages. It will be bundled with KVM, XenServer and VMware SystemVM templates. I'll keep you posted as I make progress.

[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ el10 ✔️ debian ✔️ suse15. SL-JID 17009

[vishesh92]

@sureshanaparti Some of these changes were done in #10909
Can you check if we need this PR or not.

[sureshanaparti]

@sureshanaparti Some of these changes were done in #10909 Can you check if we need this PR or not.

@vishesh92 mysql-connector-j changes are already addressed here.

[harikrishna-patnala]

@sureshanaparti can we merge this PR now as the 4.20.3 is already released ?