Pull bundletester for now

Bundletester has its own suite of dependencies coming in now, and this
will need to be fully isolated in a virtualenv to keep system packages
sane. For now it doesn't work so pull it and re-intoroduce it once 2.0
support has landed.

Prereq work to resolve the issue found in #18

install-review-tools.sh

@@ -8,14 +8,13 @@ sudo apt-get install -qy \
                         charm \
                         charm-tools \
                         python-dev \
+                        python-flake8 \
                         python-pip \
                         python-virtualenv \
                         python-tox \
                         rsync \
                         unzip
 
-sudo pip install bundletester flake8 pyyaml --upgrade
-
 echo "export LAYER_PATH=${HOME}/layers" >> /home/ubuntu/.bashrc
 echo "export INTERFACE_PATH=${HOME}/interfaces" >> /home/ubuntu/.bashrc