module_utils_service: Fix glob path of rc.d

Some distribtuions like SUSE has the rc%.d directories under /etc/init.d

Quote of /etc/rc.d.README on SLES11.

"Some people expect the system startup scripts in /etc/rc.d/.
We use a slightly different structure for better LSB compliance."

changelogs/fragments/service.yml

@@ -0,0 +1,4 @@
+---
+bugfixes:
+- Fix glob path of rc.d
+  Some distribtuions like SUSE has the rc%.d directories under /etc/init.d

lib/ansible/module_utils/service.py

@@ -48,8 +48,12 @@ def sysv_is_enabled(name, runlevel=None):
     :kw runlevel: runlevel to check (default: None)
     '''
     if runlevel:
+        if not os.path.isdir('/etc/rc0.d/'):
+            return bool(glob.glob('/etc/init.d/rc%s.d/S??%s' % (runlevel, name)))
         return bool(glob.glob('/etc/rc%s.d/S??%s' % (runlevel, name)))
     else:
+        if not os.path.isdir('/etc/rc0.d/'):
+            return bool(glob.glob('/etc/init.d/rc?.d/S??%s' % name))
         return bool(glob.glob('/etc/rc?.d/S??%s' % name))