[aws]Add VPC configuration to ECS modules (#34381)

Enable awsvpc network mode for ECS services and tasks and
their underlying task definitions

Improve test suite to thoroughly test the changes

Use runme.sh technique to run old and new versions of botocore to
ensure that the modules work with older botocore and older network modes
and fail gracefully if awsvpc network mode is used with older botocore

lib/ansible/modules/cloud/amazon/ecs_taskdefinition.py

@@ -58,9 +58,10 @@ options:
     network_mode:
         description:
             - The Docker networking mode to use for the containers in the task.
+            - C(awsvpc) mode was added in Ansible 2.5
         required: false
         default: bridge
-        choices: [ 'bridge', 'host', 'none' ]
+        choices: [ 'bridge', 'host', 'none', 'awsvpc' ]
         version_added: 2.3
     task_role_arn:
         description:
@@ -166,6 +167,10 @@ class EcsTaskManager:
                     for port in ('hostPort', 'containerPort'):
                         if port in port_mapping:
                             port_mapping[port] = int(port_mapping[port])
+                    if network_mode == 'awsvpc' and 'hostPort' in port_mapping:
+                        if port_mapping['hostPort'] != port_mapping.get('containerPort'):
+                            self.module.fail_json(msg="In awsvpc network mode, host port must be set to the same as "
+                                                  "container port or not be set")
 
             validated_containers.append(container)
 
@@ -227,7 +232,7 @@ def main():
         revision=dict(required=False, type='int'),
         force_create=dict(required=False, default=False, type='bool'),
         containers=dict(required=False, type='list'),
-        network_mode=dict(required=False, default='bridge', choices=['bridge', 'host', 'none'], type='str'),
+        network_mode=dict(required=False, default='bridge', choices=['bridge', 'host', 'none', 'awsvpc'], type='str'),
         task_role_arn=dict(required=False, default='', type='str'),
         volumes=dict(required=False, type='list')))
 
@@ -390,5 +395,6 @@ def main():
 
     module.exit_json(**results)
 
+
 if __name__ == '__main__':
     main()