Add new package: vsftpd (#18317)

var/spack/repos/builtin/packages/vsftpd/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 Vsftpd(MakefilePackage):
+    """vsftpd is a GPL licensed FTP server for UNIX systems, including
+    Linux."""
+
+    homepage = "https://security.appspot.com/vsftpd.html"
+    url      = "https://security.appspot.com/downloads/vsftpd-3.0.3.tar.gz"
+
+    version('3.0.3', sha256='9d4d2bf6e6e2884852ba4e69e157a2cecd68c5a7635d66a3a8cf8d898c955ef7')
+    version('3.0.2', sha256='be46f0e2c5528fe021fafc8dab1ecfea0c1f183063a06977f8537fcd0b195e56')
+    version('3.0.1', sha256='65487a9fccc0ae566df5999a84448a9ccb57b556b7643ffd345540299487784c')
+
+    depends_on('libcap')
+
+    def install(self, spec, prefix):
+        mkdirp(prefix.bin)
+        mkdirp(prefix.man.man5)
+        mkdirp(prefix.man.man8)
+        install('vsftpd', prefix.bin)
+        install('vsftpd.conf.5', prefix.man.man5)
+        install('vsftpd.8', prefix.man.man8)
+        install_tree('xinetd.d', join_path(prefix, 'xinetd.d'))