Comment 10 for bug 1768714

Reviewed: https://review.opencontrail.org/42721
Committed: http://github.com/Juniper/contrail-test/commit/971bf4af35459254ff16b1640aadc6676811f3f7
Submitter: Zuul v3 CI (<email address hidden>)
Branch: R5.0

commit 971bf4af35459254ff16b1640aadc6676811f3f7
Author: Pulkit Tandon <email address hidden>
Date: Thu May 3 09:00:44 2018 +0530

Enhanced the test code to pick the correct k8s_master IP out of the list
of k8s_master role mentioned in contrail_test_inputs.yaml

Closes-bug: #1768714
Change-Id: I5f3d4634a5b9a0ff26a5cc7e8a8f9d0ea61734b4