prelim/partial update to jenkins imagestream to enable tests (while we wait for global PR in openshift/origin to merge)

roles/openshift_examples/files/examples/latest/image-streams/image-streams-centos7.json

@@ -161,7 +161,7 @@
             },
             "from": {
               "kind": "DockerImage",
-              "name": "docker.io/openshift/jenkins-2-centos7:v3.11"
+              "name": "docker.io/openshift/jenkins-2-centos7:v4.0"
             },
             "name": "2",
             "referencePolicy": {

roles/openshift_examples/files/examples/latest/image-streams/image-streams-rhel7.json

@@ -112,7 +112,7 @@
             },
             "from": {
               "kind": "DockerImage",
-              "name": "registry.redhat.io/openshift3/jenkins-2-rhel7:v3.11"
+              "name": "registry.redhat.io/openshift3/jenkins-2-rhel7:v4.0"
             },
             "name": "2",
             "referencePolicy": {