add a model_configure template for global nest

tests/parm/model_configure_nest.IN

@@ -0,0 +1,53 @@
+start_year:              @[SYEAR]
+start_month:             @[SMONTH]
+start_day:               @[SDAY]
+start_hour:              @[SHOUR]
+start_minute:            0
+start_second:            0
+nhours_fcst:             @[FHMAX]
+fhrot:                   @[FHROT]
+
+dt_atmos:                @[DT_ATMOS]
+restart_interval:        @[RESTART_INTERVAL]
+
+quilting:                @[QUILTING]
+quilting_restart:        @[QUILTING_RESTART]
+write_groups:            @[WRITE_GROUP]
+write_tasks_per_group:   @[WRTTASK_PER_GROUP]
+itasks:                  @[ITASKS]
+output_history:          @[OUTPUT_HISTORY]
+history_file_on_native_grid: @[HISTORY_FILE_ON_NATIVE_GRID]
+write_dopost:            @[WRITE_DOPOST]
+write_nsflip:            @[WRITE_NSFLIP]
+num_files:               @[NUM_FILES]
+filename_base:           @[FILENAME_BASE]
+output_grid:             @[OUTPUT_GRID]
+output_file:             @[OUTPUT_FILE]
+zstandard_level:         @[ZSTANDARD_LEVEL]
+ideflate:                @[IDEFLATE]
+quantize_mode:           'quantize_bitround'
+quantize_nsd:            @[QUANTIZE_NSD]
+ichunk2d:                @[ICHUNK2D]
+jchunk2d:                @[JCHUNK2D]
+ichunk3d:                @[ICHUNK3D]
+jchunk3d:                @[JCHUNK3D]
+kchunk3d:                @[KCHUNK3D]
+imo:                     @[IMO]
+jmo:                     @[JMO]
+output_fh:               @[OUTPUT_FH]
+iau_offset:              @[IAU_OFFSET]
+
+# Output settings for the nest.
+<output_grid_02>
+output_grid:             @[NEST_OUTPUT_GRID]
+imo:                     @[NEST_IMO]
+jmo:                     @[NEST_JMO]
+cen_lon:                 @[TARGET_LON]
+cen_lat:                 @[TARGET_LAT]
+lon1:                    @[NEST_LON1]
+lat1:                    @[NEST_LAT1]
+lon2:                    @[NEST_LON2]
+lat2:                    @[NEST_LAT2]
+dlon:                    @[NEST_DLON]
+dlat:                    @[NEST_DLAT]
+</output_grid_02>