quarantine VM files on hypervisor. Assumes hypervisor is a Linux machine. A better way would be to call a hypervisor specific script on the node.
updating of the machine with yum should be done in non-interactive mode
added an ability to checksum a new image residing on NetApp.
setting HTTP proxy on HTTP client in case it is defined in the environment (Linux).
updated to use httplib2 and assigning HTTP proxy on the HTTP client if defined.
Merge branch 'master' of github.com:StratusLab/client