deploy: use docker.io for unqualified image names

Images that have an unqualified name (no explicit registry) come from
Docker Hub. This can be made explicit by adding docker.io as prefix. In
addition, the default :latest tag has been added too.

Signed-off-by: Niels de Vos <ndevos@redhat.com>

examples/cephfs/deployment.yaml

@@ -17,7 +17,7 @@ spec:
     spec:
       containers:
         - name: web-server
-          image: nginx
+          image: docker.io/nginx:latest
           volumeMounts:
             - name: mypvc
               mountPath: /var/lib/www/html

examples/cephfs/pod-clone.yaml

@@ -6,7 +6,7 @@ metadata:
 spec:
   containers:
     - name: web-server
-      image: nginx
+      image: docker.io/nginx:latest
       volumeMounts:
         - name: mypvc
           mountPath: /var/lib/www/html

examples/cephfs/pod-restore.yaml

@@ -6,7 +6,7 @@ metadata:
 spec:
   containers:
     - name: web-server
-      image: nginx
+      image: docker.io/nginx:latest
       volumeMounts:
         - name: mypvc
           mountPath: /var/lib/www/html

examples/cephfs/pod.yaml

@@ -6,7 +6,7 @@ metadata:
 spec:
   containers:
     - name: web-server
-      image: nginx
+      image: docker.io/nginx:latest
       volumeMounts:
         - name: mypvc
           mountPath: /var/lib/www