fix indentation issues (#9)

Fixed a few indentation issues where spaces were used instead of tabs.
diff --git a/scripts/install_etcd.sh b/scripts/install_etcd.sh
index a5b7256..49fae76 100755
--- a/scripts/install_etcd.sh
+++ b/scripts/install_etcd.sh
@@ -26,7 +26,7 @@
 	# Google Cloud
 	if [[ -z "$internal_ip" ]]; then
 		internal_ip=$(curl -s -H "Metadata-Flavor: Google" http://metadata.google.internal/computeMetadata/v1/instance/network-interfaces/0/ip || true)
-  fi
+	fi
 	# Azure
 	if [[ -z "$internal_ip" ]]; then
 		internal_ip=$(curl -H "Metadata:true" "http://169.254.169.254/metadata/instance/network/interface/0/ipv4/ipAddress/0/privateIpAddress?api-version=2017-08-01&format=text")
diff --git a/scripts/install_kubernetes_controller.sh b/scripts/install_kubernetes_controller.sh
index 5581de2..700c27c 100755
--- a/scripts/install_kubernetes_controller.sh
+++ b/scripts/install_kubernetes_controller.sh
@@ -29,7 +29,7 @@
 	# Google Cloud
 	if [[ -z "$internal_ip" ]]; then
 		internal_ip=$(curl -s -H "Metadata-Flavor: Google" http://metadata.google.internal/computeMetadata/v1/instance/network-interfaces/0/ip || true)
-  fi
+	fi
 	# Azure
 	if [[ -z "$internal_ip" ]]; then
 		internal_ip=$(curl -H "Metadata:true" "http://169.254.169.254/metadata/instance/network/interface/0/ipv4/ipAddress/0/privateIpAddress?api-version=2017-08-01&format=text")
diff --git a/scripts/provision.sh b/scripts/provision.sh
index f265ec4..03a5d25 100755
--- a/scripts/provision.sh
+++ b/scripts/provision.sh
@@ -74,7 +74,7 @@
 			external_ip=$(az vm show -g "$RESOURCE_GROUP" -n "$instance" --show-details --query 'publicIps' -o tsv | tr -d '[:space:]')
 		fi
 		# Vagrant
-	  if [[ "$CLOUD_PROVIDER" == "vagrant" ]]; then
+		if [[ "$CLOUD_PROVIDER" == "vagrant" ]]; then
 			external_ip=${instance}
 		fi
 
@@ -212,7 +212,7 @@
 
 	# wait for kube-apiserver service to come up
 	# TODO: make this not a shitty sleep you goddamn savage
-  echo "Waiting for kube-apiserver"
+	echo "Waiting for kube-apiserver"
 	while ! do_ssh "${VM_USER}@${controller_ip}" kubectl get componentstatuses > /dev/null; do
 		echo -n "."
 		sleep 10