new loggregator blobs build #333
* fixes issue where logs go to different apps
* address flakyness in yetis

Signed-off-by: Johannes Tuchscherer <jtuchscherer@pivotallabs.com>
initial vsphere deployment infrastructure

This adds a nfs job, which defaults to 0 instances. The vSphere
infrastructure turns it on.

Also, make fog_connection default to nil so other templates/stubs don't
have to specify it.
default nfs_z1 static ips to nil