set connection_id to id if it isn't provided, add test

plugins/modules/metal_connection.py

@@ -278,7 +278,7 @@
 ""","""
 - name: Fetch the connection
   hosts: localhost
-  tasks:     
+  tasks:
   - equinix.cloud.metal_connection:
         project_id: "Bhf47603-7a09-4ca1-af67-4087c13ab5b6"
         name: "new connection"
@@ -323,12 +323,15 @@
 def main():
     module = EquinixModule(
         argument_spec=SPECDOC_META.ansible_spec,
-        required_one_of=[("name", "connection_id"), ("project_id", "organization_id")],
+        required_one_of=[("name", "connection_id", "id"), ("project_id", "organization_id")],
     )
-
-    vlans = module.params.get("vlans") 
+    vlans = module.params.get("vlans")
     connection_type = module.params.get("type")
 
+    if not module.params.get("connection_id") and module.params.get("id"):
+      module.params["connection_id"] = module.params["id"]
+
+
     if connection_type == "dedicated":
         if vlans:
           module.fail_json(msg="A 'dedicated' connection can't have vlans.")

tests/integration/targets/metal_connection/tasks/main.yml

@@ -87,18 +87,25 @@
         project_id: "{{ project.id }}"
         name: "{{ test_connection.name }}"
       register: test_connection_fetched
-
+
+    - name: fetch existing connection using id
+      equinix.cloud.metal_connection:
+        project_id: "{{ project.id }}"
+        id: "{{ test_connection.id }}"
+      register: test_connection_fetched_with_id
+
     - assert:
         that:
           - test_connection.name == "{{ test_name }}"
           - test_connection.id == "{{ test_connection_fetched.id }}"
-
+          - test_connection.id == "{{ test_connection_fetched_with_id.id }}"
+
     - name: list test connections
       equinix.cloud.metal_connection_info:
         project_id: "{{ project.id }}"
         name: "{{ test_name }}"
       register: test_connections_list
-    
+
     - assert:
         that:
           - "test_connections_list.resources | length >= 1"