gbmcweb: Switch to Release branch

Commit List:
gBMC Team (7):
      Migrate log_services_test.cpp from Gerrit to Google3.
      Internal change
      Add option to allow-non-hardcoded-singlehost-system in gbmcweb.
      Support Crashdump in MultiHost
      Add support for DumpManager crashdump entries in Redfish LogServices
      Add Support For SystemAgnostic CrashDump Reporting
      Enable Crashdump by Default

Tested:
In Commits

fusion2: in comments

Platforms-Affected: All-TTF
Google-Bug-Id: 525041965
Change-Id: I8d1670669fd6e8b93de3fdddfeadbacf4416db35
Signed-off-by: Edward Lee <edwarddl@google.com>