Fixes Hyper-V metrics units

Changes the units of the values returned for the network and disks data to
bytes as expected.

Closes-Bug: #1289015
(cherry picked from commit f55e3510bbee39d3101fcbf2283fc037c7a42c99)

Change-Id: If4950d05213a345900b3450c83450345e04560fc
Merge "Fixes Hyper-V metrics units" into stable/havana