allow docker_plugin to upgrade a plugin

[a-gerhard]

SUMMARY

It'd be nice if docker_plugin was able to upgrade plugins

ISSUE TYPE

• New feature for existing module

COMPONENT NAME

docker_plugin

ADDITIONAL INFORMATION

don't really know what to put here. For upgrading, the plugin needs to disable, upgrade, and enable the plugin. I think that specifying something like state: latest should check for available upgrades, and apply the upgrade if needed. having a force flag might be useful to add the --force flag to the disable command.

Alternatively, provide a way to just call docker upgrade [plugin_name], and let the user take care of disabling and enabling it.