* docker_swarm_service: use exact name match when finding services
The Docker API's filtering support allows filtering for substring
matches which means that when we filter the list of running services we
may accidentally match a service called "foobar" when looking for a
service named "foo".
Fix this by filtering the list of services returned from the Docker API
so that name matches are exact. It is still worth passing the filter
parameter to the Docker API because it reduces the number of results
passed back which may be important for remote Docker connections.
Closes 50654.
* add changelog fragment for #50654
