Create second test flow json file

resources/json_files/small_flow.json

@@ -2,23 +2,15 @@
     "Description": "A small network flow problem.",
     "connections": {
         "s": {
-            "A": 5,
+            "A": 3,
             "B": 2
         },
         "A": {
-            "C": 3,
-            "D": 2
+            "t": 1,
+            "B": 1
         },
         "B": {
-            "A": 1,
-            "D": 3
-        },
-        "C": {
-            "t": 2
-        },
-        "D": {
-            "C": 1,
-            "t": 5
+            "t": 3
         }
     }
 }

resources/json_files/small_flow_2.json

+{
+    "Description": "A small network flow problem.",
+    "connections": {
+        "s": {
+            "A": 5,
+            "B": 2
+        },
+        "A": {
+            "C": 3,
+            "D": 2
+        },
+        "B": {
+            "A": 1,
+            "D": 3
+        },
+        "C": {
+            "t": 2
+        },
+        "D": {
+            "C": 1,
+            "t": 5
+        }
+    }
+}