KazooClient hosts list should accept a list of multiple endpoints

[jeffwidman]

Currently KazooClient accepts a list of multiple hosts as a single concatenated string: http://kazoo.readthedocs.io/en/latest/api/client.html#kazoo.client.KazooClient

It seems the API would be more pythonic if it also accepted the hosts as a native list:

['zk01:2181', 'zk02:2181', 'zk03:2181']

I can submit a PR for this, but only if I get confirmation the core team is open to this feature request.

See also DataDog/dd-agent#2943 (comment) - for example, KafkaClient supports both the concatenated string and native list formats.

[harlowja]

Seems fair to me.

[eribeiro]

Hello folks,
I have just submitted a PR to address this issue (my first contribution to Kazoo). See if it fits your needs.

Best regards