Add ndisc6 package to dependencies - testing
Add ndisc6 package to dependencies - testing

ndisc6 package the rdisc6 utility which I plan to use in
diskimage-builder to discover how to configure IPv6 auto/
dhcp support in the dhcp-all-interfaces element.

https://bugzilla.redhat.com/show_bug.cgi?id=1766929

Related-Change: https://review.opendev.org/692110
Related-Bug: #1754219
Change-Id: I794ffa501a96ada628e9bb497585bd3f0613f5d6
Signed-off-by: Harald Jensås <2bd5400e600240acc17694c09a04a2a7e3272d93@redhat.com>

redhat-openstack/rdoinfo,javierpena/rdoinfo