GitLab

* feat(google): add ability to apply changes generated from a plan

* feat(controller): first implementation of controller

* feat: allow to configure in-cluster and kubeconfig

* fix(controller): call RunOnce at the right time and in a loop

* feat(google): add dryRun attribute to Google DNS provider

* fix: use hosted zone id instead of DNS name

* fix(google): stupidly filter by A records for now

* feat: allow specifying the google project and zone

* feat: provide a dry-run flag which defaults to false

* chore: vendor new dependencies

* fix(config): fix failing tests for config object

* ref(controller): return plain value of ApplyChanges

* ref: simplify how to get a valid kubernetes client