IPv6 support for IaaS

[garloff]

As IaaS user (= DevOps person), I need a standardized way to expose a VM via IPv6 to the outside world.

Definition of Ready:

• User Story is small enough to be finished within one sprint
• User Story is clear and understood by the whole team
• Acceptance criteria are defined
• Acceptance criteria are clear and understood by the whole team

Definition of Done:

• Test of the use of IPv6 for North-South traffic in OSISM #151
• All acceptance criteria are met
• Changes have been reviewed
• CI tests have run successfully
• Documentation has been updated
• Release Notes have been updated

[fkr]

Release Notes need to be updated to feature this in R5