Added py-certipy package. Dependency of py-jupyterhub. (#13068)

* Added py-certipy package. Dependency of py-jupyterhub.

* Changed url to pypi

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

@@ -0,0 +1,19 @@
+# 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 PyCertipy(PythonPackage):
+    """A simple python tool for creating certificate authorities
+    and certificates on the fly."""
+
+    homepage = "https://pypi.org/project/certipy/"
+    url      = "https://pypi.io/packages/source/c/certipy/certipy-0.1.3.tar.gz"
+
+    version('0.1.3', sha256='695704b7716b033375c9a1324d0d30f27110a28895c40151a90ec07ff1032859')
+
+    depends_on('py-setuptools', type='build')
+    depends_on('py-pyopenssl', type=('build', 'run'))