Repair check of logbindir

Presumably the intention was to check that it is *both* not relative
and not already managed.

After update to 10.8 the mysql module tries and fails to manage '.'
on nodes where i have log-bin set to a relative path.

Author: qha

manifests/server/managed_dirs.pp

@@ -31,7 +31,7 @@
     $logbindir = dirname($logbin)
 
     #Stop puppet from managing directory if just a filename/prefix is specified or is not already managed
-    if ($logbindir != '.' or !($logbindir in $managed_dirs_path)) {
+    if (!($logbindir == '.' or $logbindir in $managed_dirs_path)) {
       file { $logbindir:
         ensure => directory,
         mode   => '0700',