LArCalibUtils+LArConditionsCommon+LArMonitoring: Fix LArHV configuration for run1.
The Rvalues folder exists only in CONDBR2, not in older DBs. On older data, configure LArHVCondAlg not to use it.
The Rvalues folder exists only in CONDBR2, not in older DBs. On older data, configure LArHVCondAlg not to use it.