This PS enables sharing of network namespaces with the host,
allowing for hitless upgrades of agents, and much simpler debugging.
It does however require mount propogation to be enabled in kubernetes
which is a alpha gated feature introduced in 1.8, and enabled by default
as a beta feature in 1.10.
Depends-On: I7a37f45ff6061b144c6f04233712cd84fccb3e83
Change-Id: I2a191a343fe637cbfd9e4af5277f9784af736dd1
5bb772cf50