kazoo: use `commands_retry` and `connection_retry` for KazooClient

Use of `max_retries` has been deprecated. We also update the
requirements to `kazoo >= 1.2` since this is the first version
supporting such parameters.
kazoo: requires kazoo >= 1.3.1 to have a working command_retry

A typo has been corrected in c650a7a. This commit was first released in
1.3.1. Previous versions of Kazoo will just fail.
Merge pull request #39 from vincentbernat/fix/use-kazooretry

Allow a user to configure the number of retries