Investigate the used AppStatus in pkg/omaha/omaha.go

[krnowak]

Currently we mostly use custom omaha AppStatus strings here: https://github.com/kinvolk/nebraska/blob/2a6defa3af43ab8a338dd2e2841d60ef8bc5e036/pkg/omaha/omaha.go#L120-L152

Investigate if these should be replaced with standard values. Or maybe they are valid - some reading of the omaha spec is to be done here.

[goshlanguage]

Is there any way you could give the enduser more direction? These errors seem really nebulous when you encounter them and aren't involved with FLUO or the ecosystem