Add new package: bannergrab (#18730)

* Add new package: bannergrab

* refine installation flow

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

@@ -0,0 +1,25 @@
+# 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 Bannergrab(MakefilePackage):
+    """Bannergrab is a simple tool, designed to collect information
+    from network services. It can do this using two different methods;
+    grab the connection banners and send triggers and collect the
+    responses. Bannergrab defaults to sending triggers."""
+
+    homepage = "https://github.com/johanburati/bannergrab"
+    git      = "https://github.com/johanburati/bannergrab.git"
+
+    version('master', branch='master')
+
+    def install(self, spec, prefix):
+        mkdirp(prefix.bin)
+        mkdirp(prefix.man1)
+        make('BINPATH={0}'.format(prefix.bin),
+             'MANPATH={0}/'.format(prefix),
+             'install')