By using viper.GetString(flag), viper will return the values of that
argument from a precedence order (including CLI arguments). However, if
a value was passed in through an environment variable or as a value in
the config file, it would skip the validation step since that logic was
defined against the FlagSet for command line arguments.

This change causes validation to be done across all input methods.

Fixes #157

Signed-off-by: Bob Callaway <bcallawa@redhat.com>

I noticed this when running some tests locally.

Also check it in the test.

Next up is a JSON output mode to make testing/scripting easier.

Signed-off-by: Bob Callaway <bcallawa@redhat.com>

Co-authored-by: Dan Lorenc <dlorenc@google.com>

These require the minisign binary to be installed.

- Run through the get flow, make sure the output is well structured
- Call loginfo, make sure there are no errors.

This way we don't have to worry about existing entries in the logs.

This allows us to skip sticking it onto each request context and retrieving it.

Signed-off-by: Dan Lorenc <dlorenc@google.com>

This runs against a running setup, and does a single upload of some node
data.

Clear up the stuff we no longer use and add some basic files
for test purposes (integration tests / local developement)

Implement upload command

Accept flags artifact-url,public-key, signature and validate GPG formatting and verify file signature