should speed up by 20 seconds - sudo and no sleep

stack.sh

@@ -103,8 +103,7 @@ if [[ $EUID -eq 0 ]]; then
 
     # since this script runs as a normal user, we need to give that user
     # ability to run sudo
-    apt_get update
-    apt_get install sudo
+    dpkg -l sudo || apt_get update && apt_get install sudo
 
     if ! getent passwd stack >/dev/null; then
         echo "Creating a user called stack"

tools/build_uec.sh

@@ -171,13 +171,14 @@ EOF
 cat > $vm_dir/uec/user-data<<EOF
 #!/bin/bash
 apt-get update
-apt-get install git -y
+apt-get install git sudo -y
 git clone https://github.com/cloudbuilders/devstack.git
 cd devstack
 git remote set-url origin `cd $TOP_DIR; git remote show origin | grep Fetch | awk '{print $3}'`
 git fetch
 git checkout `git rev-parse HEAD`
 cat > localrc <<LOCAL_EOF
+ROOTSLEEP=0
 `cat $TOP_DIR/localrc`
 LOCAL_EOF
 ./stack.sh