Description of changes:
Update AWS cloudformation client configurations to use new STANDARD mode.
Note: I did not make changes to stackset retry mode as current retry mode already overridden so not changing it.
By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.
Issue #, if available:
Description of changes: Update AWS cloudformation client configurations to use new STANDARD mode. Note: I did not make changes to stackset retry mode as current retry mode already overridden so not changing it.
By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.