Remove newlines from ENV concatenation

This remove an escaping nightmware.  The newlines get swallowed and become n's
meaning multiple env variables will be broken when we run them through 'eval'.
Since we escape the values it is quite find just to space seperate the exports.

main.tf

@@ -18,7 +18,7 @@ data "external" "ssh_tunnel" {
   query = {
     aws_profile        = var.aws_profile
     create             = ((var.create && var.putin_khuylo) ? "y" : "")
-    env                = join("\n", [for n, v in var.env : "export ${n}=\"${replace(v, "\"", "\\\"")}\""])
+    env                = join(" ", [for n, v in var.env : "export ${n}=\"${replace(v, "\"", "\\\"")}\""])
     external_script    = var.external_script
     gateway_host       = var.gateway_host
     gateway_port       = var.gateway_port