APIClient: Snapshot disk size should be long

When parsing the snapshot disk sizes, it should be long and not int.

See scylladb/scylla#2104

Signed-off-by: Amnon Heiman <amnon@scylladb.com>
Message-Id: <1487760019-1354-1-git-send-email-amnon@scylladb.com>
(cherry picked from commit 9c11768b9d)

src/main/java/com/scylladb/jmx/api/APIClient.java

@@ -471,7 +471,7 @@ public class APIClient {
             JsonObject obj = arr.getJsonObject(i);
             if (obj.containsKey("ks") && obj.containsKey("cf")) {
                 SnapshotDetailsTabularData.from(key, obj.getString("ks"),
-                        obj.getString("cf"), obj.getInt("total"),
+                        obj.getString("cf"), obj.getJsonNumber("total").longValue(),
                         obj.getInt("live"), data);
             }
         }