Change from HTTPS to HTTP

There seems to be a problem where ansible get_url cannot validate certificates (ansible/ansible#6904)
It looks like this is fixed in Ansible 1.9 (ansible/ansible@d240d07), so once we move to 1.9 we can use HTTPS in get_url.

install/roles/bindle-dependencies/tasks/main.yml

@@ -22,7 +22,7 @@
 
 - name: Download get-pip
   get_url:
-    url=https://bootstrap.pypa.io/get-pip.py
+    url=http://bootstrap.pypa.io/get-pip.py
     dest=/tmp
 
 - name: Install pip