add NoIndex option to daemon

While investigating #5923, it became clear that for our specific use-case, namely creating/starting/removing containers in a rapid fashion, the TruncIndex is a source of short-lived allocations which bloat memory usage and degrade performance.

This patch adds a option `NoIndex` to be passed for container creation, which prevents the container from getting added to the TruncIndex.
Well, one or the other (preferably both). But I would think that `NoIndex` is pretty self explanatory, no?