This swaps the test initialization to use the dbtest package so each
test will get a fresh database created from a template database, instead
of a completely new docker container.
* add new error funcs which take a ctx and deprecate existing funcs
* use context where available when writing error events
* remove circular internal/errors pkg dep
* suppress some chatty errors using errors.WithoutEvent()
* convert auth oidc funcs to take context where needed to write events
Co-authored-by: Jim <jlambert@hashicorp.com>