weave: Upgrade to 2.4.0

Upstream Changes:

-   weave 2.4.0 (https://github.com/weaveworks/weave/releases/tag/v2.4.0)
-   Support `externalTrafficPolicy: Local` (https://github.com/weaveworks/weave/issues/2924)
-   Make the ipset list size bigger (https://github.com/weaveworks/weave/pull/3305)
-   Break out of kube rm-peers loop if nothing changes (https://github.com/weaveworks/weave/pull/3317)

Our Changes:

-   Revamp weave-net.yml.j2 with upstream changes
-   Add more variables for customization
-   Replace WEAVE_PASSWORD with k8s secret
-   Remove hard-corded seed mode support, in favor of variables customization

inventory/sample/group_vars/k8s-cluster.yml

@@ -67,25 +67,21 @@ kube_users:
 # Can also be set to 'cloud', which lets the cloud provider setup appropriate routing
 kube_network_plugin: calico
 
-# weave's network password for encryption
-# if null then no network encryption
-# you can use --extra-vars to pass the password in command line
-weave_password: EnterPasswordHere
-
-# Weave uses consensus mode by default
-# Enabling seed mode allow to dynamically add or remove hosts
-# https://www.weave.works/docs/net/latest/ipam/
-weave_mode_seed: false
-
-# This two variable are automatically changed by the weave's role, do not manually change these values
-# To reset values :
-# weave_seed: uninitialized
-# weave_peers: uninitialized
-weave_seed: uninitialized
-weave_peers: uninitialized
-
-# Set the MTU of Weave (default 1376, Jumbo Frames: 8916)
-weave_mtu: 1376
+# Weave deployment
+# weave_password: ~
+# weave_checkpoint_disable: false
+# weave_conn_limit: 100
+# weave_hairpin_mode: true
+# weave_ipalloc_range: {{ kube_pods_subnet }}
+# weave_expect_npc: {{ enable_network_policy }}
+# weave_kube_peers: ~
+# weave_ipalloc_init: ~
+# weave_expose_ip: ~
+# weave_metrics_addr: ~
+# weave_status_addr: ~
+# weave_mtu: 1376
+# weave_no_masq_local: true
+# weave_extra_args: ~
 
 # Enable kubernetes network policies
 enable_network_policy: false