op-mode: T6161: Show container details in JSON format

I made some assumptions about node types, and I expanded the initial
request to also work for networks and containers.

I found that the "raw" versions of these commands already existed in
the python scripts, so I just used the existing flags.

(cherry picked from commit b5d10d11fc8535a95df1fce2ddb0a2a08567fa77)