Add all Status enum variants

[alexsnaps]

Adds the missing Status enum variants... We currently run into SerializationFailure when getting some attribute filter_state from Envoy... Today, this not only panics, but the error isn't even really recognized. I'm not sure, given the current trait Context definition how to best deal with these gracefully tho? The default implementation are "just" Result::unwrap() ing the underlying host call.. So thinking that this is the best for now, wdyt?

[alexsnaps]

@martijneken will you be managing this moving forward?

[alexsnaps]

Is there some next release on the horizon that could contain this (and the other changes, possibly more in the pipe)?

[PiotrSikora]

Is there some next release on the horizon that could contain this (and the other changes, possibly more in the pipe)?

Yes! This or more likely next week.