Add view with docker-registry credentials

[Jan Marchel]

Considering that certain use cases require access to private Docker repositories during deployment we should add view (Fotis) which allows them to be passed to the optimiser (Rudi) and then to SAL.

I added here how it is done manually, but this requires double check from Ankica what sal accually needs. Ali told me that this functionality is already supported.

kubectl create secret docker-registry docker-credentials \
    --docker-server=https://index.docker.io/v1/ \
    --docker-username=<username> \
    --docker-password=<password>

Without this feature we won't be able to deploy some of our use cases.

[Ankica Barisic (akki55)]

Hi Jan, can you elaborate on this? Where this access to private Docker repositories is happening?
During scenario (which) or scripts or SAL deployment?
Sorry is not clear what is to be supported.

* in any case looks like yet another new requirement and not a bug.
If is bug I should receive a bug report hopefully :)