raise E_NO_LONGER_MASTER as client exception when losing master status while trying to push an update
don't automatically retry in python client while ArakoonGoingDown or ArakoonSocketException
fix drop_master_with_load by retrying until 60 seconds have passed
retryDuringMasterElection should be different for reads vs writes
Merge pull request #266 from Incubaid/lost-master-client-exception

Lost master client exception