Fix StreamingWarpImageFilter issue with empty region

Summary

Closes #1963 (closed)

Add a test to demonstrate the issue (currently failing).

Copyright

The copyright owner is CNES and has signed the ORFEO ToolBox Contributor License Agreement.

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CI/test/cdash_test.py

+#!/usr/bin/env python3
+#
+# Copyright (C) 2005-2019 Centre National d'Etudes Spatiales (CNES)
+#
+# This file is part of Orfeo Toolbox
+#
+#     https://www.orfeo-toolbox.org/
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
 import unittest
 import os.path
 import sys
@@ -70,4 +91,4 @@ class TestHandler(unittest.TestCase):
 
 
 if __name__ == '__main__':
-  unittest.main()
\ No newline at end of file
+  unittest.main()