Update Travis and Vagrantfile to use sudo

.travis.yml

@@ -1,7 +1,7 @@
 language: python
 
 # http://docs.travis-ci.com/user/ci-environment/#CI-environment-OS
-before_install: travis_retry ./bootstrap/ubuntu.sh
+before_install: travis_retry sudo ./bootstrap/ubuntu.sh
 
 install: "travis_retry pip install tox coveralls"
 script: "travis_retry tox"

Vagrantfile

@@ -7,7 +7,7 @@ VAGRANTFILE_API_VERSION = "2"
 # Setup instructions from docs/using.rst
 $ubuntu_setup_script = <<SETUP_SCRIPT
 cd /vagrant
-./bootstrap/ubuntu.sh
+sudo ./bootstrap/ubuntu.sh
 if [ ! -d "venv" ]; then
   virtualenv --no-site-packages -p python2 venv
   ./venv/bin/python setup.py dev