Make "CVS" control dir being ignored in /etc/vserver/<name>/sysctl.

or we get vsysctl error and vserver does not startup:
vsysctl: open("/etc/vservers/chef-server/sysctl/CVS/setting"): No such file or directory
--- util-vserver-0.30.216-pre3038/src/vsysctl.c~	2012-09-27 15:08:37.000000000 +0300
+++ util-vserver-0.30.216-pre3038/src/vsysctl.c	2013-10-17 17:20:48.366930646 +0300
@@ -165,6 +165,8 @@
       while ((de = Ereaddir(dp)) != NULL) {
 	if (*de->d_name == '.')
 	  continue;
+	if (strcmp(de->d_name, "CVS") == 0)
+	  continue;
 	handle_setting(dir, de->d_name);
       }
       Eclosedir(dp);