Fix for issue #3718 memcache returner
depency python-memcached
(tested with archlinux python2-memcached)
https://bugs.launchpad.net/python-memcached
Update memcache_return.py

removed logging, this didn't work on daemonized salt
only on salt-call --local
Merge pull request #4757 from aboe76/return_memcache

Fix for issue #3718 memcache returner