Use ID instead of Name in v1beta1 & 2
Add namespaces to event creation path.
Fix watch by namespace
Don't include '.' in release tars.

Also make ownership, by default, be root.  This won't work on systems that don't have GNU tar so we warn.

Fixes: #1902
Merge pull request #2066 from lavalamp/eventing2

Event fixes
Merge pull request #2074 from derekwaynecarr/ns_watch

Fix watch by namespace
Merge pull request #2076 from jbeda/1902-clean-tars

Don't include '.' in release tars.
Use the Container VM image in the google-cloud project.

Fixes #2078