Changelog:
==========
Fix several possible resource warnings and deprecation warnings when cleaning
up contexts and sockets, especially in pyzmq’s own tests and when implicit
teardown of objects is happening during process teardown.
Signed-off-by: Zheng Ruoqin <zhengrq.fnst@fujitsu.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
