Pass Digital Ocean ssh_fingerprints as a list

* Fix digital-ocean module to pass ssh_fingerprints
as a list since the module accepts a list

CHANGES.md

@@ -18,6 +18,7 @@ Notable changes between versions.
 #### Digital Ocean
 
 * Add kubelet `--volume-plugin-dir` flag to allow flexvolume plugins ([#142](https://github.com/poseidon/typhoon/pull/142))
+* Fix to pass `ssh_fingerprints` as a list to droplets ([#143](https://github.com/poseidon/typhoon/pull/143))
 
 #### Google Cloud
 

digital-ocean/container-linux/kubernetes/controllers.tf

@@ -45,7 +45,7 @@ resource "digitalocean_droplet" "controllers" {
   private_networking = true
 
   user_data = "${element(data.ct_config.controller_ign.*.rendered, count.index)}"
-  ssh_keys  = "${var.ssh_fingerprints}"
+  ssh_keys  = ["${var.ssh_fingerprints}"]
 
   tags = [
     "${digitalocean_tag.controllers.id}",

digital-ocean/container-linux/kubernetes/workers.tf

@@ -26,7 +26,7 @@ resource "digitalocean_droplet" "workers" {
   private_networking = true
 
   user_data = "${data.ct_config.worker_ign.rendered}"
-  ssh_keys  = "${var.ssh_fingerprints}"
+  ssh_keys  = ["${var.ssh_fingerprints}"]
 
   tags = [
     "${digitalocean_tag.workers.id}",