AWS Groupping (VPC/Subnets/Region)

[xescugc]

Add the logic for VPCs, Subnets and Regions. The idea is to have a Grouping between resources that belong to the same VPC, Subnet and/or Region.

On AWS reading the TFState/HCL we are able to know if some resource belong to those:

• VPC: vpc_id and vpc_security_group_ids.
• Subnets: TBD
• Region: TBD

The idea would be to add a Groups on the provider.Provider that does the same as ResourceInOut that returns which groups the resource belongs to and then from that extend to different Providers bit by bit.

[xlr-8]

Regarding the grouping mechanism, there are several more:

1. Region
2. VPC
3. Security group (when there are more than 1 instance for example)
4. Subnets
5. Availability Zone (nice addition to the region one)

I'm not sure of the order of priority though, region/VPC seem fairly straight forward and good to start with.
Perhaps security groups & subnets afterwards, while leaving the AZ for the last.