In a template, I loop over a group of fusemq hosts defined in my invetory 
file e.g.

fuseMQ_URL=failover:( {% for host in groups['fusemq'] %} tcp://{{ host }}, 
{% endfor %} )

The result is of course, a trailing comma - how can I avoid this?

fuseMQ_URL=failover:(  tcp://fusemq01, tcp://fusemq02,  )

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