Merge pull request #33 from dim-on-github/security-groups-fix

Ability to create new SG and have addititonal ones applied

Author: vara-bonthu

locals.tf

@@ -1,7 +1,7 @@
 locals {
   execution_role_arn = var.create_iam_role ? aws_iam_role.mwaa[0].arn : var.execution_role_arn
 
-  security_group_ids = var.create_security_group ? [aws_security_group.mwaa[0].id] : var.security_group_ids
+  security_group_ids = var.create_security_group ? concat([aws_security_group.mwaa[0].id], var.security_group_ids) : var.security_group_ids
 
   source_bucket_arn = var.create_s3_bucket ? aws_s3_bucket.mwaa[0].arn : var.source_bucket_arn