adding a fix for pagination of log groups (#678)

* adding a fix for pagination of log groups

* removing redundant variable

Author: DevanathanSabapathy1

src/SimpleReplay/helper/aws_service.py

@@ -64,7 +64,14 @@ def cw_describe_log_groups(log_group_name=None, region=None):
             logGroupNamePrefix=log_group_name
         )
     else:
-        return cloudwatch_client.describe_log_groups()
+        logs = cloudwatch_client.describe_log_groups()
+
+        token = logs.get('nextToken','')
+        while token != '':
+            response_itr = cloudwatch_client.describe_log_groups(nextToken=token)
+            logs['logGroups'].extend(response_itr['logGroups'])
+            token = response_itr['nextToken'] if 'nextToken' in response_itr.keys() else ''
+    return logs
 
 
 def cw_describe_log_streams(log_group_name, region):