- for ginkgo parallel mode pass -p to autodetect ginkgo nodes.
- disable parallel mode by default (false).
- use provider "skeleton" instead of "local".
- make run_e2e.sh pass shellcheck.
The Dockerfile has a few more options, let's surface that in the
manifest. Also use the same defaults in the manifest as the Dockerfile
itself.
Change-Id: Ib7419cf7999430db15f39ac414c80ee362fcda76