The top-level `docker inspect` command could return
an error if the nodes Swarm certificates were expired.
In situations where the user did not explicitly
ask for an object-type (`--type=foo`), we should
ignore these errors, and consider them equal to
"node is not a swarm manager".
This change makes `docker inspect` ignore these
errors if no type was specified.
As a further optimization, the "swarm status"
result is now stored in a variable, so that
other swarm-specific API calls can be skipped.
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
518b65c6f5