Make vagrant bootstrap scripts args more obvious

Also add missing curly braces around variables.

TrivialFix

Change-Id: I8798ec52d9ddf76ad1f3debdf087ed4f51defc38

dev/vagrant/bootstrap.sh

@@ -3,10 +3,14 @@
 # Bootstrap script to configure all nodes.
 #
 
+VM=$1
+MODE=$2
+KOLLA_PATH=$3
+
 export http_proxy=
 export https_proxy=
 
-if [ $2 = 'aio' ]; then
+if [ "$MODE" = 'aio' ]; then
     # Run registry on port 4000 since it may collide with keystone when doing AIO
     REGISTRY_PORT=4000
     SUPPORT_NODE=operator
@@ -123,7 +127,7 @@ EOF
         docker run -d \
             --name registry \
             --restart=always \
-            -p $REGISTRY_PORT:5000 \
+            -p ${REGISTRY_PORT}:5000 \
             -e STANDALONE=True \
             -e MIRROR_SOURCE=https://registry-1.docker.io \
             -e MIRROR_SOURCE_INDEX=https://index.docker.io \
@@ -136,6 +140,6 @@ EOF
 prep_work
 install_docker
 
-if [ "$1" = "operator" ]; then
+if [ "$VM" = "operator" ]; then
     configure_operator
 fi

dev/vagrant/ubuntu-bootstrap.sh

@@ -1,8 +1,11 @@
 #!/bin/bash
 
-kolla_path=$3
-registry=operator.local
-registry_port=4000
+VM=$1
+MODE=$2
+KOLLA_PATH=$3
+
+REGISTRY=operator.local
+REGISTRY_PORT=4000
 
 install_ansible() {
     echo "Installing Ansible"
@@ -25,7 +28,7 @@ install_docker() {
     echo "deb https://apt.dockerproject.org/repo ubuntu-trusty main" > /etc/apt/sources.list.d/docker.list
     apt-get update
     apt-get install -y  docker-engine=1.8.2*
-    sed -i -r "s,^[# ]*DOCKER_OPTS=.+$,DOCKER_OPTS=\"--insecure-registry $registry:$registry_port\"," /etc/default/docker
+    sed -i -r "s,^[# ]*DOCKER_OPTS=.+$,DOCKER_OPTS=\"--insecure-registry ${REGISTRY}:${REGISTRY_PORT}\"," /etc/default/docker
 }
 
 install_python_deps() {
@@ -47,7 +50,7 @@ create_registry() {
     docker run -d \
             --name registry \
             --restart=always \
-            -p 4000:5000 \
+            -p ${REGISTRY_PORT}:5000 \
             -e STANDALONE=True \
             -e MIRROR_SOURCE=https://registry-1.docker.io \
             -e MIRROR_SOURCE_INDEX=https://index.docker.io \
@@ -58,7 +61,7 @@ create_registry() {
 
 configure_kolla() {
     echo "Configuring Kolla"
-    pip install -r $kolla_path/requirements.txt
+    pip install -r ${KOLLA_PATH}/requirements.txt
 }
 
 echo "Kernel version $(uname -r)"