add retries to data source(s) aws_ec2_transit_gateway_vpc_attachments

[tbugfinder]

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Description

While creating a TGW-attachment and querying that attachment within the same terraform execution, the data source might return no element as the API isn't consistent yet. Therefore a data source should retry before returning zero elements.

New or Affected Resource(s)

• data source/aws_ec2_transit_gateway_vpc_attachment

Potential Terraform Configuration

data "aws_ec2_transit_gateway_vpc_attachment" "vpca" {
  filter {
    name   = "vpc-id"
    values = ["${module.vpc.id}"]
  }
}

References