Add support for java 21 for debian packages

[vishesh92]

Description

This PR adds support for java 21 in the debian packages for debian 13 & ubuntu 26.04

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?

[vishesh92]

@blueorangutan package

[blueorangutan]

@vishesh92 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.

[weizhouapache]

@blueorangutan package

[blueorangutan]

@weizhouapache 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.

[weizhouapache]

Points to consider:

• Build JDK: the Build-Depends order puts openjdk-17-jdk ahead of openjdk-21-jdk. On a host with both installed, the build picks whichever apt resolves first. That’s probably fine, but it’s worth confirming which JDK the Debian 13 and Ubuntu 26.04 build actually uses.
• Remaining mysql.connector users: tools/marvin/marvin/dbConnection.py and some tools/docker files still use mysql.connector directly. They are test tooling, so this is probably out of scope, but they’ll have the same problem on these distros.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 18.03%. Comparing base (c7667d8) to head (0fada8d).

Additional details and impacted files

@@            Coverage Diff            @@
##               4.22   #14418   +/-   ##
=========================================
  Coverage     18.03%   18.03%           
- Complexity    16286    16289    +3     
=========================================
  Files          5937     5937           
  Lines        536771   536771           
  Branches      65782    65782           
=========================================
+ Hits          96787    96797   +10     
+ Misses       428932   428921   -11     
- Partials      11052    11053    +1     

Flag	Coverage Δ
uitests	4.04% <ø> (ø)
unittests	19.10% <ø> (+<0.01%)	⬆️

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[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ el10 ✖️ debian ✖️ suse15. SL-JID 19578

[vishesh92]

Points to consider:

* Build JDK: the Build-Depends order puts openjdk-17-jdk ahead of openjdk-21-jdk. On a host with both installed, the build picks whichever apt resolves first. That’s probably fine, but it’s worth confirming which JDK the Debian 13 and Ubuntu 26.04 build actually uses.

On distros that ship both (e.g. Ubuntu 24.04), a fresh install still pulls OpenJDK 17 since it's the first alternative, so existing setups see no change. OpenJDK 21 is only used when it's the only one available (Debian 13) or already installed.

* Remaining mysql.connector users: tools/marvin/marvin/dbConnection.py and some tools/docker files still use mysql.connector directly. They are test tooling, so this is probably out of scope, but they’ll have the same problem on these distros.

I don't think we need to make any changes for this in the PR.

[vishesh92]

@blueorangutan package

[blueorangutan]

@vishesh92 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 19583

[weizhouapache]

lgtm

ubuntu26 and debian13 environments have been created successfully without extra step to install python3 connector