NET-203: Networks should support additional routes

OS-2179: restart mdata:fetch on update that modifies one of the properties mdata:fetch writes out
IMGAPI-152 imgadm should ensure that we always have an @final snapshot of an imported dataset

'imgadm import' and 'imgadm install' will now reject an image with
0 or >1 snapshots.
IMGAPI-152: rev imgadm to 2.0.3 for the @final change
OS-2183 fix 'make check' cleanliness regression introduced by IMGAPI-152.
OS-2184 fix reprovision regression.
OS-2187 add vm-version/v to vm objects so we can handle upgrades which require updates to properties.
OS-2188 add vm_logs name for vm logadm.conf entry, also bump to 1 week of logs.
Add some Samsung/Crucial SSD tunables to sd.conf for experimentation
Merge branch 'master' of git://github.com/joyent/smartos-live into ec