Add test `Region_4_15_days`

Inst_eddies/Tests/short_tests.json

@@ -511,5 +511,18 @@
 	    ["mkdir", "-p", "SHPC/Slice_0/Cyclones"],
 	    "$build_dir/Inst_eddies/Tests/test_get_1_outerm"
 	]
+    },
+    {
+	"title": "Region_4_15_days",
+	"description":"This is used in several tests in Overlap.",
+	"command":
+	[
+	    "$build_dir/Inst_eddies/inst_eddies_Aviso.py",
+	    "--template=dt_global_allsat_phy_l4_%Y%m%d_20210726.nc",
+	    "--last_date=2006-01-15",
+	    "--bbox", "16.125", "20.875", "-38.875", "-34.125",
+	    "$large_input_dir/dt_global_allsat_phy_l4_20060101_20210726.nc"
+	],
+        "create_file": ["config_nml.txt", "&config_nml /\n"]
     }
 ]