cs_service_offering: Implement customizable compute offers (#54597)

test/integration/targets/cs_service_offering/tasks/guest_vm_service_offering.yml

@@ -181,3 +181,43 @@
   assert:
     that:
     - so is not changed
+
+- name: create custom service offering
+  cs_service_offering:
+    name: custom
+    display_text: custom offer
+    is_customized: yes
+    host_tags: eco
+    storage_tags:
+      - eco
+      - backup
+    storage_type: local
+  register: so
+- name: verify create custom service offering
+  assert:
+    that:
+    - so is changed
+    - so.name == "custom"
+    - so.display_text == "custom offer"
+    - so.is_customized == True
+    - so.cpu_number is not defined
+    - so.cpu_speed is not defined
+    - so.memory is not defined
+    - so.host_tags == ['eco']
+    - so.storage_tags == ['eco', 'backup']
+    - so.storage_type == "local"
+
+- name: remove custom service offering
+  cs_service_offering:
+    name: custom
+    state: absent
+  register: so
+- name: verify remove service offering
+  assert:
+    that:
+    - so is changed
+    - so.name == "custom"
+    - so.display_text == "custom offer"
+    - so.host_tags == ['eco']
+    - so.storage_tags == ['eco', 'backup']
+    - so.storage_type == "local"