Implement ReadMany operation for CheckRequiredFieldsMissingFromShape generator function

[brycahta]

Is your feature request related to a problem?
I have to write custom hook code for ec2-controller vpc to check if Status.State exists before trying to find the resource in AWS.

Describe the solution you'd like
Generator function should handle this so custom code isn't needed. Add ReadMany implementation here

Describe alternatives you've considered
N/A

[brycahta]

Working on this now

[RedbackThomson]

Thanks @brycahta !