Review this network telemetry update

# VPC Flow Logs
resource "aws_flow_log" "vpc" {
  vpc_id                   = aws_vpc.main.id
  traffic_type             = "ALL"
  log_destination_type     = "cloud-watch-logs"
  log_destination          = aws_cloudwatch_log_group.flow_logs.arn
  iam_role_arn             = aws_iam_role.flow_logs.arn
}

resource "aws_cloudwatch_log_group" "flow_logs" {
  name              = "/aws/vpc/flowlogs"
  retention_in_days = 90
}