Respect IPv6 when building proxy address

Set wireguard persistent-keepalive on wg set peer

Revert "Merge pull request #1190 from erikwilson/wireguard-keepalive"

This reverts commit e712cdf7, reversing
changes made to d5929bc8.

Wireguard docs fail to describe that persistent-keepalive is only valid
when peer is set.

Update helm controller and vendor udpate

Fix missing version for tags

Apply containerd patch 3889

Cleanup k8s versioning

Kine fix

Small dqlite fixes

Upgrade k8s  to v1.17.0

Set Wireguard keepalive to 25 seconds

Remove docker-compose default token

Cleanup docker-compose.yml

Enable ip forwarding on both all and default net config

Allow --pause-image to set docker sandbox image also

Cleanup --flannel-backend help text

Upgrade go to 1.13.5

Mutable --node-label values for server/agent sub-commands.