Add unit to health sensor

Added unit property in dbus

Tested:
Verfied by running on target and querying unit peoperty from dbus
busctl get-property xyz.openbmc_project.HealthMon
/xyz/openbmc_project/sensors/utilization/Memory
xyz.openbmc_project.Sensor.Value Unit

Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>
Change-Id: I3a4fe71e83992688cdcdd2bdff9c2037558cf12d
1 file changed