Support selective alarm creation for instance class specific metrics (e.g. CPUCreditBalance alarms only for T class instances)

[silashansen]

Hi

Is there a good reason the CPUCreditBalance alarm was removed that I should be aware of?

Referring to this commit: 2e636a8

[knizami]

Hello, this was removed since CPU credits are specific to the T class of EC2 instances and there may be many people that are not using these instances resulting in alarms being created for M class instances as well as other instance classes where CPUCreditBalance is not a published metric. This can still be used if you have use for it.

I updated the title to align to an update where the solution can distinguish and create alarms for CPUCreditBalance only if the instance is a T class instance. This will avoid this issue.