Test a deployment with ALL resources at the same time (e2e_be)

1. Re-use the previous generated TF files and group them all either in one directory or in the same file
2. Generates a speculative execution plan with terraform plan command
3. Create the resources with terraform apply command
4. Check that all resources are correctly created/running on the Harvester cluster
5. Destroy the resources with the command terraform destroy

Expected Results

Refer to the harvester_ssh_key resource expected results