Description of changes:
Empty list parameters should not be serialized when doing EC2 requests, instead the parameters must be ignored. Otherwise, the service will return an InvalidRequest exception
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Issue #, if available:
Description of changes: Empty list parameters should not be serialized when doing EC2 requests, instead the parameters must be ignored. Otherwise, the service will return an InvalidRequest exception
By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.