Merge pull request #38 from thoughtbot/bt/allow-for-redis-version-updates

Why this change is being made:

We want to upgrade Redis for Hub. It's currently stuck on version 6 and we want to be able to add a var to set the version see terraform-flightdeck-aws-application and use that for our Hub infrastructure see infra
What were the changes made to support this:

remove ignored engine_version

Author: brian-penguin

elasticache-redis/replication-group/main.tf

@@ -29,9 +29,7 @@ resource "aws_elasticache_replication_group" "this" {
   lifecycle {
     ignore_changes = [
       # The token should be rotated externally
-      auth_token,
-      # Minor upgrades will cause noise in diffs
-      engine_version
+      auth_token
     ]
   }
 }