Add new py-stestr package (#14029)

var/spack/repos/builtin/packages/py-stestr/package.py

@@ -0,0 +1,18 @@
+# Copyright 2013-2019 Lawrence Livermore National Security, LLC and other
+# Spack Project Developers. See the top-level COPYRIGHT file for details.
+#
+# SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+from spack import *
+
+
+class PyStestr(PythonPackage):
+    """A parallel Python test runner built around subunit."""
+
+    homepage = "https://stestr.readthedocs.io/en/latest/"
+    url      = "https://pypi.io/packages/source/s/stestr/stestr-2.5.1.tar.gz"
+
+    version('2.5.1', sha256='151479fdf2db9f5f492b5285f4696f2d38960639054835dbdcd4c0687122c0fd')
+
+    depends_on('python@2.7:', type=('build', 'run'))
+    depends_on('py-setuptools', type='build')