refactor(schema): rename nested dict keys and simplify validation

roles/system_check/tasks/main.yml

@@ -135,7 +135,7 @@
         hostname: "{{ hypervisor_cfg.url }}"
         username: "{{ hypervisor_cfg.username }}"
         password: "{{ hypervisor_cfg.password }}"
-        validate_certs: "{{ hypervisor_cfg.validate_certs | bool }}"
+        validate_certs: "{{ hypervisor_cfg.certs | bool }}"
         datacenter: "{{ hypervisor_cfg.datacenter }}"
         name: "{{ hostname }}"
         folder: "{{ system_cfg.path if system_cfg.path | length > 0 else omit }}"