gbmcweb master: SRCREV bump 2573c3410c..83afa05e7a

Alex Lai (1):
      Add configuration to control exposure of default system link in Chassis.

Edward Lee (2):
      Move MockSystemRegistry to its Own File
      Expose Get/Set BootNext via SystemRegistry

gBMC Team (7):
      Add SensorState enum to support deterministic error reporting in Redfish OEM status fields.
      Internal change
      Move MockSystemRegistry to its Own File
      Support multi-chassis power state in getChassisState
      Automated Code Change
      Add Redfish GET support for Chassis Control members (gsz).
      Enable Get/Set BootNext in Redfish

Google-Bug-Id: 535318923
Google-Bug-Id: 525421832
Fusion-Link: fusion2 N/A
Tested: N/A
Change-Id: I9c0c6ac658943c6be78f427fa3c87c2440d0bc40
Signed-off-by: Edward Lee <edwarddl@google.com>