Change directory before any operation to one readable by INSTALLUSER (EJAB-1322)

This is required in order to suppress error messages like
"File operation error: eacces" when ejabberd was started from directory,
which is not readable by INSTALLUSER (/root, for example). See rhbz #564686:

https://bugzilla.redhat.com/564686

Signed-off-by: Peter Lemenkov <lemenkov@gmail.com>

src/ejabberdctl.template

@@ -114,6 +114,10 @@ HOME=$SPOOLDIR
 # create the home dir with the proper user if doesn't exist, because it stores cookie file
 [ -d $HOME ] || $EXEC_CMD "mkdir -p $HOME"
 
+# Change to a directory readable by INSTALLUSER to
+# prevent "File operation error: eacces." messages
+cd $HOME
+
 # export global variables
 export EJABBERD_CONFIG_PATH
 export EJABBERD_MSGS_PATH