Add test for `survival.py`

Convert_Matlab/tests.json

@@ -36,5 +36,13 @@
 	    "$src_dir/Convert_Matlab/inst_eddies_HDF5.py",
 	    "$src_dir/Convert_Matlab/Eurec4A_OA/adt_2019-12-15.mat"
 	]
+    },
+    {
+	"title": "Survival", "command": "$src_dir/Convert_Matlab/survival.py",
+	"required":
+	[
+	    "$PWD/Eurec4A/Trajectories_Anti_filt_v6.mat",
+	    "$PWD/Eurec4A/Trajectories_Cyclo_filt_v6.mat"
+	]
     }
 ]