Fix case where all node in node group dies before they saved sysfile (wrt gcp)
  and Qmgr incorrectly thinks that "node group is missing"


storage/ndb/src/kernel/blocks/ERROR_codes.txt:
  code
storage/ndb/src/kernel/blocks/dbdih/DbdihMain.cpp:
  fix
storage/ndb/test/ndbapi/testSystemRestart.cpp:
  test
storage/ndb/test/run-test/daily-basic-tests.txt:
  test