Comment 5 for bug 2067514

We will need to decide how to go around this problem -> we could get more of these instances and as we discussed quick fix is to consider having a blacklist.

For now, SAL supports blacklisting certain regions.
We can provide support for blacklisting images, however, they will then need to be propagated somehow when adding the cloud.

Another solution is that Optimizer does this when requesting node candidates.

Some design decision is to be made regarding how to solve this.