Reduce UM log output (#321)

Author: blimlim

atmosphere/um_env.yaml

@@ -5,7 +5,7 @@ DATAW: '{work_path}'
 FASTRUN: 'true'
 IDEALISE: ''
 PAREXE: ''
-PRINT_STATUS: PrStatus_Diag
+PRINT_STATUS: PrStatus_Normal
 RPSEED: ''
 RUNID: PI-01
 TYPE: NRUN