[aws] Add suboptions to aws_application_scaling_policy (#43042)

* [aws] Add suboptions to aws_application_scaling_policy

Fixes #42917

* Remove any suboptions that are None

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

@@ -170,7 +170,7 @@ policy_name:
 policy_type:
     description: The policy type.
     returned: when state present
-    type: string    
+    type: string
 min_capacity:
     description: The minimum value to scale to in response to a scale in event. Required if I(state) is C(present).
     returned: when state present
@@ -197,7 +197,7 @@ step_scaling_policy_configuration:
             type: string
             sample: "ChangeInCapacity, PercentChangeInCapacity, ExactCapacity"
         cooldown:
-            description: The amount of time, in seconds, after a scaling activity completes 
+            description: The amount of time, in seconds, after a scaling activity completes
                 where previous trigger-related scaling activities can influence future scaling events
             returned: when state present and the policy type is StepScaling
             type: int
@@ -462,7 +462,18 @@ def main():
                                                         ], type='str'),
         policy_type=dict(required=True, choices=['StepScaling', 'TargetTrackingScaling'], type='str'),
         step_scaling_policy_configuration=dict(required=False, type='dict'),
-        target_tracking_scaling_policy_configuration=dict(required=False, type='dict'),
+        target_tracking_scaling_policy_configuration=dict(
+            required=False,
+            type='dict',
+            options=dict(
+                CustomizedMetricSpecification=dict(type='dict'),
+                DisableScaleIn=dict(type='bool'),
+                PredefinedMetricSpecification=dict(type='dict'),
+                ScaleInCooldown=dict(type='int'),
+                ScaleOutCooldown=dict(type='int'),
+                TargetValue=dict(type='float'),
+            )
+        ),
         minimum_tasks=dict(required=False, type='int'),
         maximum_tasks=dict(required=False, type='int'),
         override_task_capacity=dict(required=False, type=bool)
@@ -472,6 +483,15 @@ def main():
 
     connection = module.client('application-autoscaling')
 
+    # Remove any target_tracking_scaling_policy_configuration suboptions that are None
+    policy_config_options = [
+        'CustomizedMetricSpecification', 'DisableScaleIn', 'PredefinedMetricSpecification', 'ScaleInCooldown', 'ScaleOutCooldown', 'TargetValue'
+    ]
+    if isinstance(module.params['target_tracking_scaling_policy_configuration'], dict):
+        for option in policy_config_options:
+            if module.params['target_tracking_scaling_policy_configuration'][option] is None:
+                module.params['target_tracking_scaling_policy_configuration'].pop(option)
+
     if module.params.get("state") == 'present':
         # A scalable target must be registered prior to creating a scaling policy
         scalable_target_result = create_scalable_target(connection, module)