Add new package: vvtest (#18701)

* Adding vvtest to spack

* Fixing flake8 failures

* Adding suggestions

* Removing unnecessary import

* Incorporating suggested changes

var/spack/repos/builtin/packages/vvtest/package.py

@@ -0,0 +1,29 @@
+# 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 Vvtest(Package):
+    """Vvtest is a test harness originally authored by Richard Drake for the
+    Alegra-Emphasis project, written in pure Python, and designed for running
+    verification, validation, and regression type tests. Being a stand-alone
+    product, it can also be used by analysts to help manage sets of
+    simulations, especially useful on batch platforms."""
+
+    homepage    = "https://github.com/rrdrake/vvtest"
+    url         = "https://github.com/rrdrake/vvtest/archive/1.0.0.tar.gz"
+    git         = "https://github.com/rrdrake/vvtest.git"
+    maintainers = ['mrmundt', 'rrdrake']
+
+    version('1.2.0', sha256='d6b2432a2e6c43fb0d87ffc0eaa34a74d2268a732f7709ebdcf1344fbcaee154')
+    version('1.1.0', sha256='674585f12d393ab9745a5ab26f59cb0f0e213f9c597b37467125979b5955ca79')
+    version('1.0.0', sha256='acd04e8e6635ed1b1725b793e8287a58831d6380759a81159142a6ff3397a8dd')
+
+    depends_on('python@2.6.0:3', type=('build', 'run'))
+
+    def install(self, spec, prefix):
+        python = spec['python'].command
+        python('install_vvtest', prefix.bin)