We call the Render methods on Tasks by reflection, and some of them
don't care about the Target, but do care about the Context (e.g. the PKI
tasks, which only care about the CAStore)
Remove a bunch of inconsistencies so that the reflective walk is not
suprising, and also rename it to ReflectRecursive.
Then use this for dry-run change printing.
* GCE support only
* Key and secret generation
* "Direct mode" makes API calls
* "Dry run mode" previews the changes
* Terraform output (though key generation not working for master ip)
* cloud-init output (though debian image does not ship with cloud-init)
Justin Santa Barbara