Add more chown to create_jailkit_chroot.sh
In file /usr/local/ispconfig/server/scripts/create_jailkit_chroot.sh I needed to change (between ><):
Change ownership of the chroot directory to root
chown root:root $CHROOT_HOMEDIR
chown root:root $(basename $CHROOT_HOMEDIR)<<<<<
Otherwise jk_init may fail due to improper permissions.
Related to task #3429 (closed)