chore(e2e): Set up ec2 instance storage with encryption (#5580)

enos/modules/aws_boundary/boundary-instances.tf

@@ -23,6 +23,7 @@ resource "aws_instance" "controller" {
     volume_type = var.controller_ebs_type
     throughput  = var.controller_ebs_throughput
     tags        = local.common_tags
+    encrypted   = true
   }
 
   tags = merge(local.common_tags,
@@ -50,6 +51,7 @@ resource "aws_instance" "worker" {
     volume_type = var.worker_ebs_type
     throughput  = var.worker_ebs_throughput
     tags        = local.common_tags
+    encrypted   = true
   }
 
   tags = merge(local.common_tags,

enos/modules/aws_worker/main.tf

@@ -152,6 +152,7 @@ resource "aws_instance" "worker" {
     volume_type = var.ebs_type
     throughput  = var.ebs_throughput
     tags        = local.common_tags
+    encrypted   = true
   }
 
   tags = merge(