* add logrotate for samba4 logs (Bug #26376)

https://forge.univention.org/bugzilla/show_bug.cgi?id=26376

Index: conffiles/etc/logrotate.d/univention-samba4
===================================================================
--- univention-samba4-1.0.126.orig/conffiles/etc/logrotate.d/univention-samba4	(Revision 33501)
+++ univention-samba4-1.0.126/conffiles/etc/logrotate.d/univention-samba4	(Arbeitskopie)
@@ -16,4 +16,14 @@
 for setting in settings.keys():
 	print "\t%s" % settings[setting]
 print "}"
+
+for name in ('samba', 'smbd', 'nmbd'):
+	settings = univention.lib.ucrLogrotate.getLogrotateConfig(name, configRegistry)
+	print "/var/log/samba/log.%s {" % name
+	for setting in settings.keys():
+		print "\t%s" % settings[setting]
+	print "\tpostrotate"
+	print "\t\t/usr/bin/killall -HUP /usr/sbin/%s" % name
+	print "\tendscript"
+	print "}"
 @!@