weave: Upgrade to 2.5.0 (#3660)

* weave: Upgrade to 2.5.0

Upstream Changes:

-   weave 2.5.0 (https://github.com/weaveworks/weave/releases/tag/v2.5.0)
-   Adds support for Kubernetes `hostPort` mapping
-   Adds support for Kubernetes `ipBlock` NetworkPolicy feature

Our Changes:

-   Templates sync with upstream manifests
-   Remove legacy nodePort fix

* BC for weave < 2.5.0

roles/network_plugin/weave/templates/weave-net.yml.j2

@@ -141,7 +141,7 @@ items:
                 - name: CONN_LIMIT
                   value: "{{ weave_conn_limit | int }}"
                 - name: HAIRPIN_MODE
-                  value: "{{ weave_hairpin_mode | bool }}"
+                  value: "{{ weave_hairpin_mode | bool | lower }}"
                 - name: IPALLOC_RANGE
                   value: "{{ weave_ipalloc_range }}"
                 - name: EXPECT_NPC
@@ -176,12 +176,11 @@ items:
 {% endif %}
               image: {{ weave_kube_image_repo }}:{{ weave_kube_image_tag }}
               imagePullPolicy: {{ k8s_image_pull_policy }}
-              livenessProbe:
+              readinessProbe:
                 httpGet:
                   host: 127.0.0.1
                   path: /status
                   port: 6784
-                initialDelaySeconds: 30
               resources:
                 requests:
                   cpu: 10m
@@ -203,7 +202,6 @@ items:
                 - name: xtables-lock
                   mountPath: /run/xtables.lock
             - name: weave-npc
-              args: []
               env:
                 - name: HOSTNAME
                   valueFrom: