Ship openrc file in /etc/init.d

CHANGES

@@ -1,6 +1,7 @@
 1.2.0 UNRELEASED
  - Add new expand option to setup.py so various file system locations can be
    specified at build/install time rather than being hard coded
+ - Install openrc init file for Gentoo and other openrc users
 
 1.1.0 2019-04-12
  - Add SubDomains option to enable signing for sub-domains (LP: #1811535)

setup.py

@@ -112,7 +112,8 @@ setup(
         ['man/dkimpy-milter.8']), ('etc', ['etc/dkimpy-milter.conf']),
         (os.path.join('lib', 'systemd', 'system'),
         ['system/dkimpy-milter.service']),(os.path.join('etc', 'init.d'),
-        ['system/dkimpy-milter'])],
+        ['system/dkimpy-milter']), (os.path.join('etc', 'init.d'),
+        ['system/dkimpy-milter.openrc'])],
     zip_safe = False,
     cmdclass={
         'expand': FileMacroExpand,