Correct ImportError in python-k8sclient code.
Correct ImportError in python-k8sclient code.

Change-Id: I60190211f7ed92e0dc91351b67d2a747cbf49576
Closes-bug: #1444793
Partially-Implements: blueprint python-k8sclient

dimtruck/magnum,eshijia/magnum,LaynePeng/magnum,ramielrowe/magnum,ChengTiesheng/magnum,ffantast/magnum,annegentle/magnum,Tennyson53/SUR,ffantast/magnum,ddepaoli3/magnum,eshijia/SUR,paulczar/magnum,ArchiFleKs/magnum,openstack/magnum,Tennyson53/magnum,Tennyson53/SUR,ramielrowe/magnum,paulczar/magnum,ChengTiesheng/magnum,eshijia/magnum,mjbrewer/testindex,sajuptpm/magnum,LaynePeng/magnum,mjbrewer/testindex,ddepaoli3/magnum,mjbrewer/testindex,Alzon/SUR,eshijia/SUR,dimtruck/magnum,annegentle/magnum,openstack/magnum,Tennyson53/magnum,hongbin/magnum,jay-lau/magnum,ArchiFleKs/magnum,Alzon/SUR,hongbin/magnum,sajuptpm/magnum