[e2e] fix VM's image creation

[lanfon72]

Which issue(s) this PR fixes:

Following fix for issue #2524, #2527, #2530

What this PR does / why we need it:

Add image uid for existing test cases of VM.

Special notes for your reviewer:

1. Update managers' support version to rc1 as v1.8.0-rcX < v1.8.0.
2. Adjust VM model to inject image_uid more eariler.
3. Update image fixtures and add image_uid when we use vm.add_image.

Additional documentation or context

N/A

[albinsun]

Should folowing calls need modify too?

/workspaces/tests $ grep -P '\.add_image\(\S+?,\s*\S+?\s*\)' -r ./*
./harvester_e2e_tests/integrations/test_1_volumes.py:    vm_spec.add_image(vm_name, ubuntu_image["id"])
./harvester_robot_tests/libs/vm/rest.py:            vm_spec.add_image("disk-0", image_id)

[lanfon72]

Should folowing calls need modify too?

/workspaces/tests $ grep -P '\.add_image\(\S+?,\s*\S+?\s*\)' -r ./*
./harvester_e2e_tests/integrations/test_1_volumes.py:    vm_spec.add_image(vm_name, ubuntu_image["id"])
./harvester_robot_tests/libs/vm/rest.py:            vm_spec.add_image("disk-0", image_id)

1_volumes be updated in #2531, consider the merge order, I will update it if this PR is latter merged.

robot's test not be configured as daily run and... I think its implementation still discussing ? 💭

[albinsun]

LGTM

[asc5543]

lgtm