Update k8s conformance version.

* Updated k8s conformance image version from 1.7.3 to 1.7.5.

Change-Id: I90de6b7bf605832797ad2cd70850bd26cce677a1
diff --git a/jenkins/client/job/deploy/rollout.yml b/jenkins/client/job/deploy/rollout.yml
index 06aab0a..b326477 100644
--- a/jenkins/client/job/deploy/rollout.yml
+++ b/jenkins/client/job/deploy/rollout.yml
@@ -51,7 +51,7 @@
               default: "http://127.0.0.1:8080"
             TEST_K8S_CONFORMANCE_IMAGE:
               type: string
-              default: "docker-dev-virtual.docker.mirantis.net/mirantis/kubernetes/k8s-conformance:v1.7.3-1_1503652362277"
+              default: "docker-dev-virtual.docker.mirantis.net/mirantis/kubernetes/k8s-conformance:v1.7.5-2_1504192939316"
             TEST_TEMPEST_IMAGE:
               type: string
               description: "Tempest docker image"