(captiveportal, new) change rc script to use cp instead of rsync (which is not...

(captiveportal, new) change rc script to use cp instead of rsync (which is not installed by default) and change file ownership to chroot user

(cherry picked from commit 9bbca9c2)

src/etc/rc.d/captiveportal

@@ -75,10 +75,12 @@ captiveportal_start()
             fi
             mkdir $CPWORKDIR/$zonedirname/tmp
             chmod 770 $CPWORKDIR/$zonedirname/tmp
-            chown www:www $CPWORKDIR/$zonedirname/tmp
 
             # sync default template
-            /usr/local/bin/rsync --delete -ar $CPDEFAULTTEMPLATE/ $CPWORKDIR/$zonedirname/htdocs/
+            cp -a $CPDEFAULTTEMPLATE/ $CPWORKDIR/$zonedirname/htdocs/
+
+            # chown zone files to chroot user
+            chown -R www:www $CPWORKDIR/$zonedirname
 
             # overlay custom user layout if available.
             /usr/local/opnsense/scripts/OPNsense/CaptivePortal/overlay_template.py $zoneid