container: Allow custom ip addresses for more than one network

roles/container/meta/argument_specs.yaml

@@ -118,17 +118,22 @@ argument_specs:
         type: list
         required: false
         default: []
-        elements: str
+        elements: dict
+        options:
+          name:
+            description: Network name
+            type: str
+            required: true
+          ip:
+            description: Container IPv4 address in the network
+            type: str
+            required: false
+            default: ""
       container_hostname:
         description: Hostname to set inside the container. Available to other containers on the same network.
         type: str
         required: false
         default: ""
-      container_ip:
-        description: IPv4 address for the container in the first network defined in container_networks
-        type: str
-        required: false
-        default: ""
 
       container_secrets:
         description: A list of secrets available to the container as file or environment variable