Fixes #16095: Maximumly 199 filter values (#16184)

When making calls to AWS EC2 api with DescribeTags actiion and if the
number of filter values is greater than or equal to 200, it results in
400 bad request reply and the error message is:
"Error connecting to AWS backend.\n The maximum number of filter values specified on a single call is 200".

The change is so that we call get_all_tags with maximum 199 filter
values one at a time until all are consumed.

contrib/inventory/ec2.py

@@ -527,7 +527,12 @@ class Ec2Inventory(object):
             instance_ids = []
             for reservation in reservations:
                 instance_ids.extend([instance.id for instance in reservation.instances])
-            tags = conn.get_all_tags(filters={'resource-type': 'instance', 'resource-id': instance_ids})
+
+            max_filter_value = 199
+            tags = []
+            for i in range(0, len(instance_ids), max_filter_value):
+                tags.extend(conn.get_all_tags(filters={'resource-type': 'instance', 'resource-id': instance_ids[i:i+max_filter_value]}))
+
             tags_by_instance_id = defaultdict(dict)
             for tag in tags:
                 tags_by_instance_id[tag.res_id][tag.name] = tag.value