OpenVZ -> Debian -> ISPCONFIG

Following guide: https://www.howtoforge.com/tutorial...n-8-jessie-apache-bind-dovecot-ispconfig-3/3/
On the last step:

Code:

VPSID=101
for CAP in CHOWN DAC_READ_SEARCH SETGID SETUID NET_BIND_SERVICE NET_ADMIN SYS_CHROOT SYS_NICE CHOWN DAC_READ_SEARCH SETGID SETUID NET_BIND_SERVICE NET_ADMIN SYS_CHROOT SYS_NICE
do
  vzctl set $VPSID --capability ${CAP}:on --save
done

Do I need to do this? I wish the guide had said what it was for... What does it do? I may have to request it from my host...
THANKS