docs(installing_deis): import gce provisioning docs
ref(installing_deis): remove unused link
Merge pull request #2365 from bacongobbler/gce-docs-import

docs(installing_deis): import gce provisioning docs
style(logger): add code doc strings
style(deisctl): add code doc strings
ref(deisctl): remove unused utility code

Also capitalize NewUUID() as recommended by `golint`.