add new package : py-ansible (#14436)

* add new package : py-ansible

* update license info

* update py-ansible depends

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

+# Copyright 2013-2020 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 PyAnsible(PythonPackage):
+    """
+    Ansible is a radically simple IT automation platform that makes your
+    applications and systems easier to deploy.
+    """
+
+    homepage = "https://github.com/ansible"
+    url      = "https://github.com/ansible/ansible/archive/v2.9.1.tar.gz"
+
+    version('2.9.2',  sha256='27673726435e8773ef031ef6ffb121b8ec75b85b07b7684454b430c3c9a848a9')
+    version('2.9.1',  sha256='087a7644890e27c26171b0d24fc5d64024f12201ffb81d222aaa5704987e4c12')
+    version('2.9.0',  sha256='a2a9b1a74f3d47b82f9ea9da10ebf3573fa10c1783b7ed9b7eb937c7052fcb13')
+    version('2.8.7',  sha256='1f7c765bf2a60e3f8d634a7eb3739a70522ba93a77e9266b07c119d29e08d484')
+    version('2.8.6',  sha256='94c96aaf781417c073b340381c83992e4880f2a660b46888530909bc7c57ef71')
+    version('2.7.15', sha256='84f020f3b09575536fb200a3ff8e9bc98dce1ba3d8dd830134691237c9cb9a85')
+    version('2.7.14', sha256='92f0be1de4f9d1c0a3a35963fb853a6d7831360fd1e734cb36d601495a71770c')
+    version('2.6.20', sha256='55962e79e24a67a5534bf08aa0482d5f7322ad3f112a3ebffc4a58ae02b82277')
+
+    depends_on('python@2.7:2.8,3.5:', type=('build', 'run'))
+    depends_on('py-setuptools', type='build')
+    depends_on('py-jinja2', type=('build', 'run'))
+    depends_on('py-pyyaml', type=('build', 'run'))
+    depends_on('py-cryptography', type=('build', 'run'))