Add CPU and memory requests to example Kubernetes manifests

If you don't specify, the default is typically 0 which (a) gives the
Kubernetes scheduler a false idea of expected usage and (b) makes the
Linux scheduler penalise the Scope processes under contention.

For best results adjust the figures here after observing actual usage
on your cluster.

examples/k8s/deploy.yaml

@@ -33,3 +33,7 @@ spec:
           ports:
             - containerPort: 4040
               protocol: TCP
+          resources:
+            requests:
+              cpu: 200m
+              memory: 200Mi

examples/k8s/ds.yaml

@@ -38,6 +38,10 @@ spec:
                   fieldPath: spec.nodeName
           image: weaveworks/scope:1.10.2
           imagePullPolicy: IfNotPresent
+          resources:
+            requests:
+              cpu: 100m
+              memory: 100Mi
           securityContext:
             privileged: true
           volumeMounts: