New package: py-retry (#27730)

* package dependency

* [py-retry]

- added homepage
- removed unnecessary depends_on

* [py-retry] added dependencies back

* [py-retry] removed .999

Co-authored-by: Sid Pendelberry <sid@rit.edu>

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

@@ -0,0 +1,21 @@
+# Copyright 2013-2021 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 PyRetry(PythonPackage):
+    """Easy to use retry decorator."""
+
+    homepage = "https://github.com/invl/retry"
+    pypi     = "retry/retry-0.9.2.tar.gz"
+
+    version('0.9.2', sha256='f8bfa8b99b69c4506d6f5bd3b0aabf77f98cdb17f3c9fc3f5ca820033336fba4')
+
+    depends_on('python@2.6:',         type=('build', 'run'))
+    depends_on('py-setuptools',       type='build')
+    depends_on('py-pbr',              type='build')
+    depends_on('py-decorator@3.4.2:', type=('build', 'run'))
+    depends_on('py-py@1.4.26:1',  type=('build', 'run'))