Unable to do backups with instance that has internal AWS tags

[AndrewFarley]

Reported via email...

Failure trying to create image or tag image.  See/report exception below

Traceback (most recent call last):

  File "/var/task/lambda_function.py", line 104, in backup_tagged_instances_in_region

    Tags=instance['Tags']

  File "/var/runtime/botocore/client.py", line 314, in _api_call

    return self._make_api_call(operation_name, kwargs)

  File "/var/runtime/botocore/client.py", line 612, in _make_api_call

    raise error_class(parsed_response, operation_name)

botocore.exceptions.ClientError: An error occurred (InvalidParameterValue) when calling the CreateTags operation: Value ( aws:autoscaling:groupName ) for parameter key is invalid. Tag keys starting with 'aws:' are reserved for internal use

Scanning for AMIs with tags (AWSAutomatedDailySnapshots)

This occurs because some instances created with CloudFormation or that are associated to an autoscaler have tags on them prefixed with aws:. We should skip these tags.