Adds second mailrelay server for authentication migration

test/aws-us-gov/mdr-test-c2/090-instance-mailrelay/terragrunt.hcl

@@ -13,7 +13,7 @@ locals {
 # working directory, into a temporary folder, and execute your Terraform commands in that folder.
 terraform {
   # Double slash is intentional and required to show root of modules
-  source = "git@github.xdr.accenturefederalcyber.com:mdr-engineering/xdr-terraform-modules.git//base/mailrelay?ref=v1.24.0"
+  source = "git@github.xdr.accenturefederalcyber.com:mdr-engineering/xdr-terraform-modules.git//base/mailrelay?ref=v2.0.13"
 }
 
 dependency "vpc-system-services" {
@@ -52,7 +52,9 @@ inputs = {
     Purpose = "Mail Relay - Proxy between our systems and SES"
     Terraform = "aws/${basename(get_parent_terragrunt_dir())}/${path_relative_to_include()}/"
   }
-  instance_name = "mailrelay" # TODO: Fix this when actual swap is taking place.
+  # MSOCI-1852 - 2021-08-04 - old_instance_name be removed when old instance is decomissioned
+  old_instance_name = "mailrelay" 
+  instance_name = "mailrelay2" 
   instance_type = local.account_vars.locals.mailrelay_instance_type
   vpc_id = dependency.vpc-system-services.outputs.vpc_id
   azs = dependency.vpc-system-services.outputs.azs