All CNIs: support ANY toleration. (#3391)

Before, Nodes tainted with NoExecute policy did not have calico/weave Pod.
Network pod should run on all nodes whatever happens on a specific node.

Also always set the Pods to be critical.
Also remove deprecated scheduler.alpha.kubernetes.io/tolerations annotations.

roles/network_plugin/cilium/templates/cilium-ds.yml.j2

@@ -27,8 +27,6 @@ spec:
         # gets priority scheduling.
         # https://kubernetes.io/docs/tasks/administer-cluster/guaranteed-scheduling-critical-addon-pods/
         scheduler.alpha.kubernetes.io/critical-pod: ''
-        scheduler.alpha.kubernetes.io/tolerations: >-
-          [{"key":"dedicated","operator":"Equal","value":"master","effect":"NoSchedule"}]
 {% if cilium_enable_prometheus %}
         prometheus.io/scrape: "true"
         prometheus.io/port: "9090"
@@ -225,11 +223,7 @@ spec:
 
       restartPolicy: Always
       tolerations:
-        - effect: NoSchedule
-          key: node-role.kubernetes.io/master
-        - effect: NoSchedule
-          key: node.cloudprovider.kubernetes.io/uninitialized
-          value: "true"
-        # Mark cilium's pod as critical for rescheduling
+        - operator: Exists
+        # Mark pod as critical for rescheduling (Will have no effect starting with kubernetes 1.12)
         - key: CriticalAddonsOnly
           operator: "Exists"