Alexandre Beslic 9d14a49a6b swarm: improve cli output on node promote/demote for unchanged role
As of now promoting (or demoting) a node that has its role
left unchanged will always print a successful message.

This PR fixes the issue by matching the behavior on swarmkit's
swarmctl command and printing a message when desired role is
the current role of the node.

As a result this also avoids calling update when it is not
necessary.

Signed-off-by: Alexandre Beslic <alexandre.beslic@gmail.com>
Upstream-commit: 5479df79c7859d5a09f42c22ddb5fa3e56ceeb7c
Component: engine
2016-08-05 15:51:32 -07:00
S
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