Assert keeps going after failure, but require immediately fails
the tests, making it easier to find the output related to the test
failure, rather than having to comb through a bunch of subsequent
assertion failures. For equality tests, we may or may not want to
continue, but for error checks we almost always want to immediately
fail the test. Exceptions can be changed as-needed.
* exec function working dir is the kustomization that referenced it
* suggested changes
* more code review
* use a field instead of an annotation
* more code review
- Support specifying RunFns.Functions using the `-i` flag to specify an image
- Parse the function config from key-value arguments specified after ` -- `
- Support reading from stdin / writing to stdout if no arguments are provided
- Table driven tests for parsing flags and args into RunFns structure
