Started using RUC LSM version from WRFV3.5.1

Changed to RUC LSM in the stock V3.5.1 release due to errors (AVOST IN VILKA) with the modified version that was in the WRFV3.4.1_WOF release.

A similar error still occurs in the V3.5.1 RUC LSM version if the number of tiles is large (160), but doesn't if that number is small (32).