RollBack to era20c instead of ifs vor v3.2.3

3.2.3/runtime/classic/ece-ifs+nemo.sh.tmpl

@@ -146,7 +146,7 @@ RLCRIT_UPHYS=0.875e-5
 # era20c    vegetation from an off-line LPJ-Guess run forced with ERA20C
 #           (currently available only for T255 and T159)
 #
-ifs_veg_source="ifs"
+ifs_veg_source="era20c"
 
 case ${ifs_veg_source} in
 "ifs" )