[2132682] Default YAML entity name convention.

Description of problem: Some entities, when created from YAML, have names with prefix, while others do not.

Prefixed YAML names: "vm-example" for VM, "vm-template-example" for Template

Version-Release number of selected component (if applicable):

How reproducible: always

Steps to Reproduce:
1. Create new VM or new Template from YAML
2.
3.

Actual results: When new VM is created from YAML, name is "vm-example"

Expected results: When new VM is created from YAML, name is "example"

Additional info: Same for new Template