Backport of add go-discover binary to control-plane image into release/1.0.x#1750

hc-github-team-consul-ecosystem merged 3 commits intorelease/1.0.xhashicorp/consul-k8s:release/1.0.xfrom

backport/curtbushko/missing-go-discover/generally-viable-ramhashicorp/consul-k8s:backport/curtbushko/missing-go-discover/generally-viable-ramCopy head branch name to clipboard