using kazoo.retry.Retry instead of our custom solution, so that the groomer can also benefit from it
merged with org/testing
using kazoo's retry method instead of a custom kazoo.Retry, and fixed unit tests accordingly
catching KazooExceptions on all zookeeper interactinos
added new ZKInternalException, for cases when talking to zookeeper fails
catching zkinternalexceptions in datastore server, and creating new sequence id if we get 0 back
Merge remote-tracking branch 'org/testing' into kazoo-retry
properly handling ZKInternalException in is_in_transaction
catching ZKInternalExceptions that is_xg can throw
catching ZKInternalException in is_blacklisted
removed TODO that we don't need anymore, now that we throw the right ZKInternalException
Merge pull request #438 from shatterednirvana/kazoo-retry

Using kazoo.retry.Retry