Updated shebang in scripts for better portability

scripts/bootstrap-controllers.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -x
 
 if [[ -z ${NUM_CONTROLLERS} || -z ${NUM_WORKERS} || -z ${KUBERNETES_VERSION} ]]; then

scripts/bootstrap-etcd.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -x
 
 if [[ -z ${NUM_CONTROLLERS} || -z ${NUM_WORKERS} || -z ${KUBERNETES_VERSION} ]]; then

scripts/bootstrap-workers.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -x
 
 DOCKER_VERSION=1.12.5

scripts/create-routes.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -x
 
 if [[ -z ${NUM_CONTROLLERS} || -z ${NUM_WORKERS} || -z ${KUBERNETES_VERSION} ]]; then

scripts/deploy-dns.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -x
 
 kubectl create -f https://raw.githubusercontent.com/kelseyhightower/kubernetes-the-hard-way/master/services/kubedns.yaml

scripts/kube-down.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -x
 
 if [[ -z ${NUM_CONTROLLERS} || -z ${NUM_WORKERS} ]]; then

scripts/kube-up.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -x
 
 if [[ -z ${NUM_CONTROLLERS} || -z ${NUM_WORKERS} || -z ${KUBERNETES_VERSION} ]]; then

scripts/kubectl-remote-access.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -x
 
 KUBERNETES_PUBLIC_ADDRESS=$(gcloud compute addresses describe kubernetes \

scripts/setup-ca.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -x
 
 if [[ -z ${NUM_CONTROLLERS} || -z ${NUM_WORKERS} || -z ${KUBERNETES_VERSION} ]]; then

scripts/smoke-test.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -x
 
 kubectl run nginx --image=nginx --port=80 --replicas=3

scripts/start-infra-gcp.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/bash
+#!/usr/bin/env bash
 set -x
 
 if [[ -z ${NUM_CONTROLLERS} || -z ${NUM_WORKERS} || -z ${KUBERNETES_VERSION} ]]; then