phlax

> Thank you for early review np, just letting you know that its ok to force-push on a WIP PR - all my reviews have been on the basis of...

@tyxia could you merge main and ill review again /wait

@tyxia if you can merge main i would be happy to review again

i think not stale

somewhat related to this - iirc the Envoy binary will accept lower case enums whereas the protobuf validator doesnt - would be good to get some more consistency in how...

seems sensible to me @markdroth could you take a look

@qiwzhang i think this change needs approval from an api shepherd - @adisuissa would you mind taking a look

@hanxiaop would be great to land this - shouldnt be too hard to fix up /wait

gentle ping @hanxiaop

i can pick this one up again /retest