Add support for ipv6 addresses

Remove formating changes

plugins/lookup/aws_service_ip_ranges.py

@@ -19,6 +19,8 @@
     description: 'The service to filter ranges by. Options: EC2, S3, CLOUDFRONT, CODEbUILD, ROUTE53, ROUTE53_HEALTHCHECKS'
   region:
     description: 'The AWS region to narrow the ranges to. Examples: us-east-1, eu-west-2, ap-southeast-1'
+  ipv6_prefix:
+    description: 'Return only ipv6 addresses. Option: ipv6_prefix=True'
 '''
 
 EXAMPLES = """
@@ -55,9 +57,16 @@
 
 class LookupModule(LookupBase):
     def run(self, terms, variables, **kwargs):
+        if "ipv6_prefix" in kwargs["ipv6_prefix"] is False:
+            prefixes_label = "prefixes"
+            ip_prefix_label = "ip_prefix"
+        else:
+            prefixes_label = "ipv6_prefixes"
+            ip_prefix_label = "ipv6_prefix"
+
         try:
             resp = open_url('https://ip-ranges.amazonaws.com/ip-ranges.json')
-            amazon_response = json.load(resp)['prefixes']
+            amazon_response = json.load(resp)[prefixes_label]
         except getattr(json.decoder, 'JSONDecodeError', ValueError) as e:
             # on Python 3+, json.decoder.JSONDecodeError is raised for bad
             # JSON. On 2.x it's a ValueError
@@ -78,4 +87,4 @@ def run(self, terms, variables, **kwargs):
             service = str.upper(kwargs['service'])
             amazon_response = (item for item in amazon_response if item['service'] == service)
 
-        return [item['ip_prefix'] for item in amazon_response]
+        return [item[ip_prefix_label] for item in amazon_response]