Fix e2e tests failures due to missing license token

[sp1999]

Issue #, if available:
#2855

Description of changes:
This PR fixes the inplace upgrade tests and upgrade tests without cluster config generation failing with the following error:

2025-02-22T05:23:13.299Z	V0	❌ Validation failed	{"validation": "validate extended kubernetes version support is supported", "error": "getting licenseToken: licenseToken is required for extended kubernetes support", "remediation": "ensure you have a valid license for extended Kubernetes version support"}

It also fixes the workload cluster tests failing with the following error:

Error: validations failed: validating licenseToken is unique for cluster main-i-00821-76f2f36-w-0: license token <license-token-string> is already in use by cluster main-i-00821-76f2f36

This is because #9264 moved the logic for setting the license token in the cluster config from NewClusterE2ETest() function to GenerateClusterConfig() function. The problem with this is that all tests call the NewClusterE2ETest() function but not every test calls the GenerateClusterConfig() function. Some tests have upgrade flows which do not generate cluster config which led to those tests not having the license token set in the cluster spec. This PR fixes the issue by updating those tests to set the license token in the main test function.

Additionally, this PR also updates the Flux flow tests to generate support bundle if the test fails. This is necessary because currently the GitFlux and GitHubFlux tests are failing but there is no way to root cause the issue since the support bundle is not getting generated.

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[sp1999]

/approve

[eks-distro-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sp1999

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.40%. Comparing base (ec4dc14) to head (722b558).
Report is 1 commits behind head on main.

Additional details and impacted files

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  Coverage   72.40%   72.40%           
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  Files         589      589           
  Lines       46361    46361           
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  Hits        33569    33569           
  Misses      11032    11032           
  Partials     1760     1760           

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[2ez4szliu]

/lgtm