dhcp.cgi: Fixes bug#11774 - allows dhcp option of array of integer 8

dhcp.cgi: Fixes bug#11774 - allows dhcp option of array of integer 8

- This v2 version is to correct the bug number. I entered a wronn bug number in the first
   version
- This extends the allowed options from just array of ip-address to also include
   integer 8 or integer 16 or integer 32.
- Tested out on vm testbed. The array of integer 8 (or 16 or 32) is acceptewd by the dhcp
   options section. I am not able to test out that the function actually works as I don't
   have any dhcp situation set up to use that capability.
- Records or array of records is still not included. It was only an expansion of the array
   of section to include integers.

Fixes: bug#11774
Tested-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Adolf Belka <adolf.belka@ipfire.org>
Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>