changes on "icehouse" branch (so far)
Vagrantfile:  forward relevant ports, for access by O.Stack command-line tools and 'boot-cirros.py'.  Bump the memory, cpus.  Use OpsCode's 13.10 Ubuntu image
devstack.yml: point version to O.Stack 'icehouse'; install my favorite Linux tools (first-cut)
boot-cirros.py: make a functional URL to O.Stack APIs