Make openshift_web_console_prefix defaults like other components

Other components are like 'registry.access.redhat.com/ose-' or
'openshift/origin-' based on OCP versus Origin.

roles/openshift_web_console/vars/default_images.yml

@@ -1,4 +1,4 @@
 ---
-__openshift_web_console_prefix: "docker.io/openshift/"
+__openshift_web_console_prefix: "docker.io/openshift/origin-"
 __openshift_web_console_version: "latest"
-__openshift_web_console_image_name: "origin-web-console"
+__openshift_web_console_image_name: "web-console"

roles/openshift_web_console/vars/openshift-enterprise.yml

@@ -1,4 +1,4 @@
 ---
-__openshift_web_console_prefix: "registry.access.redhat.com/openshift3/"
+__openshift_web_console_prefix: "registry.access.redhat.com/openshift3/ose-"
 __openshift_web_console_version: "v3.9"
-__openshift_web_console_image_name: "ose-web-console"
+__openshift_web_console_image_name: "web-console"