Summary: 6 instances, 6 unique

Text	Count
# FIXME: we hard code the log stream name for now	1
// TODO: We hope to merge it with CWMetricValidator when the validation process is finalized.	1
// TODO there are more types: double, binary, not needed at the moment	1
// TODO: put dry run into common flags	1
// TODO: we can't distinguish canary and soaking instances as the have same tag	1
# TODO: can we inject cluster name down from the pipeline	1