expose metrics of the cortex-tenant proxy

[pschulten]

Thanks for your work!

Could you also expose internal metrics of cortex-tenant for http traffic, error rates, latency, etc.?
Does this make sense?

[blind-oracle]

Sure, that's a good idea. Though I don't know when I can implement it :)

[AlexDCraig]

I can add some if you accept community PRs. I actually need some metrics for this :D

[blind-oracle]

Sure, always welcome

[AlexDCraig]

I posted a draft here #35