CDF No Longer Needs NAT or IGW

[anish-kunduru]

Aws Connected Device Framework Affected Module(s):

I'm submitting a ...

• bug report
• feature request

Description:

When CDF was first created, the IoT Core endpoints didn't support PrivateLink, so it wasn't possible to deploy CDF lambdas into a private subnet without IGW & NAT. Since all the IoT Core endpoints we currently use now support VPC-E, we should be able to remove these dependencies entirely.

Current behavior:

Expected behavior:

Steps to reproduce:

Additional Information:
IGW & NAT will be required if a customer is using SPARQL, but this not something currently supported by CDF.