allow instance_name and inventory_hostname

tasks/host-management.yml

@@ -11,7 +11,7 @@
         "ipaddress": "{{ ansible_host }}"
       },
       "folder": "{{ cmk_folder | default('Unsorted') }}",
-      "hostname": "{{ inventory_hostname }}"
+      "hostname": "{{ instance_name | default(inventory_hostname) }}"
       }
     body_format: raw
     return_content: yes
@@ -33,7 +33,7 @@
   uri:
     method: POST
     url: "{{ cmk_omd_protocol }}://{{ cmk_omd_host }}/{{ cmk_omd_site }}/check_mk/webapi.py?action=discover_services&mode=refresh{{ cmk_auth }}"
-    body: 'request={"hostname":"{{ inventory_hostname }}"}'
+    body: 'request={"hostname":"{{ instance_name | default(inventory_hostname) }}"}'
     body_format: raw
     status_code: 200
     validate_certs: no