ci: Add support for Karpenter in the kaito pipelines

[helayoty]

Reason for Change:

• Update e2e pipelines in order to be able to check the gpu-provisioner and Karpenter use cases. This will be handled by adding a new input variable nodeprovisioner for the workflow_call.
• Add make target to install karpenter.
• Unify the variable names used in e2e tests.
• Simplified the e2e pipeline by using the generate identities script.
• Use GH variables to pass the k8s version. AKS_K8S_VERSION

Requirements

• added unit tests and e2e tests (if applicable).

Issue Fixed:

Notes for Reviewers:

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 56.54%. Comparing base (1f06382) to head (6345eef).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #569   +/-   ##
=======================================
  Coverage   56.54%   56.54%           
=======================================
  Files          30       30           
  Lines        2966     2966           
=======================================
  Hits         1677     1677           
  Misses       1191     1191           
  Partials       98       98           

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