Second method needed to perform server-side move. It updates
metadata key and nonce and all segments key and nonces.
Change-Id: Ia43b26622a13048269f0ae9e1524b345db112adb
First from two methods needed to perform server-side move. It gets
metadata key and nonce and all segments key and nonces and returns
all of that to uplink.
Change-Id: Ied2c79559e77d3f63091c4d61948f2d6a2147d67