[TEST] test_4_vm_template.py::TestVMTemplate::test_create_template_with_data fails due to AssertionError: (500, 'unexpected end of JSON input')

[asc5543]

What's the test to develop? Please describe

test_4_vm_template.py::TestVMTemplate::test_create_template_with_data fails due to AssertionError: (500, 'unexpected end of JSON input') in v1.8.2-rc1

Follow the test steps in description to run manual test will pass, so it maybe a script issue.

Steps:
1. Create VM and write some data
2. Create new template and keep data from the VM
3. Create new VM from the template
4. Check data consitency

Prerequisite and dependency of test

Any prerequisite environment and pre-condition required for this test.
Provide test case dependency here if any.

Describe the items of the test development (DoD, definition of done) you'd like

Please use a task list for items on a separate line with a clickable checkbox https://docs.github.com/en/issues/tracking-your-work-with-issues/about-task-lists

• test_4_vm_template.py::TestVMTemplate::test_create_template_with_data should run success without issue

Additional context

Add any other context or screenshots about the test request here.

[asc5543]

Pass in v1.6.1 but fail in v1.7.2 and v1.8.2-rc1

[asc5543]

It seems the userdata has something wrong

After fixing it manually, the test case can pass

[brandboat]

The integration test failure occurs because the Python script is missing the harvesterhci.io/sshNames annotation when creating the VM template, which causes a JSON unmarshalling error (AssertionError: (500, 'unexpected end of JSON input')) at handler.go#L1501. Manual tests via the UI pass successfully because the UI automatically injects this specific annotation during the template creation workflow, as seen in index.js#L940. To resolve this, we need to update the Python test suite to explicitly include the missing annotation in the request payload.