Add yamllint pre-commit hook for YAML file standardization

[vanzan01]

Add yamllint hook to .pre-commit-config.yaml to standardize YAML files across the project. Created .yamllint.yml configuration with relaxed rules to accommodate existing files. Fixed colon spacing in .asf.yaml to pass yamllint checks.

Changes

• Add yamllint hook to .pre-commit-config.yaml
• Create .yamllint.yml configuration with relaxed rules for existing files
• Fix colon spacing in .asf.yaml to pass yamllint checks

Test plan

• yamllint runs successfully on existing YAML files
• Configuration allows existing files to pass with minimal changes
• Fixed formatting issue in .asf.yaml

Closes #10974

[boring-cyborg]

Congratulations on your first Pull Request and welcome to the Apache CloudStack community! If you have any issues or are unsure about any anything please check our Contribution Guide (https://github.com/apache/cloudstack/blob/main/CONTRIBUTING.md)
Here are some useful points:

• In case of a new feature add useful documentation (raise doc PR at https://github.com/apache/cloudstack-documentation)
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[DaanHoogland]

@blueorangutan package

[blueorangutan]

@DaanHoogland 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 3.90%. Comparing base (2d669db) to head (7fb54b5).
Report is 14 commits behind head on main.

❗ There is a different number of reports uploaded between BASE (2d669db) and HEAD (7fb54b5). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (2d669db)	HEAD (7fb54b5)
unittests	1	0

Additional details and impacted files

@@              Coverage Diff              @@
##               main   #11017       +/-   ##
=============================================
- Coverage     16.60%    3.90%   -12.71%     
=============================================
  Files          5730      414     -5316     
  Lines        508082    33744   -474338     
  Branches      61770     6074    -55696     
=============================================
- Hits          84388     1317    -83071     
+ Misses       414259    32271   -381988     
+ Partials       9435      156     -9279     

Flag	Coverage Δ
uitests	3.90% <ø> (-0.04%)	⬇️
unittests	?

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[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ debian ✔️ suse15. SL-JID 13778

[DaanHoogland]

@blueorangutan package

[blueorangutan]

@DaanHoogland 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 ✔️ debian ✖️ suse15. SL-JID 13794

[blueorangutan]

Packaging result [SF]: ✔️ el8 ✔️ el9 ✔️ debian ✔️ suse15. SL-JID 13815

[DaanHoogland]

clgtm

[jbampton]

https://github.com/apache/cloudstack/actions/runs/15782986518/job/44493446898?pr=11017

Can you fix the pre-commit workflow ?