Update k8s conformance version.

* Updated k8s conformance image version from 1.5 to 1.7.

Change-Id: I31e1a65a921ba135b24ebc88bca0c42278ee8bb8
diff --git a/jenkins/client/job/deploy/lab/deploy.yml b/jenkins/client/job/deploy/lab/deploy.yml
index 75bab43..54a13ad 100644
--- a/jenkins/client/job/deploy/lab/deploy.yml
+++ b/jenkins/client/job/deploy/lab/deploy.yml
@@ -135,7 +135,7 @@
                 default: "http://127.0.0.1:8080"
               TEST_K8S_CONFORMANCE_IMAGE:
                 type: string
-                default: "docker-dev-virtual.docker.mirantis.net/mirantis/kubernetes/k8s-conformance:v1.5.1-3_1482332392819"
+                default: "docker-dev-virtual.docker.mirantis.net/mirantis/kubernetes/k8s-conformance:v1.7.3-1_1503652362277"
 
               TEST_TEMPEST_IMAGE:
                 type: string