Better document what metrics the add*Alarm props are for

[echeung-amzn]

Feature scope

All

Describe your suggested feature

Some alarming props like addQueueMinSizeAlarm are relatively easy to understand what it's meant for, but some like addQueueMaxTimeToDrainMessagesAlarm aren't as clear since it isn't a "standard" metric.

We should try to document all of these props to clarify what exactly is being monitored/alarmed on.