[query] Plumb potential tag completion/aggregate through to m3query endpoints#1481

Merged

arnikola merged 2 commits intomasterfrom arnikola/query-tag-completion

Mar 29, 2019

+1,187-437

Commits on Mar 29, 2019

[query] Add new aggregate endpoint to query
arnikola
committed
Emit values in aggregator test until termination of test
Rob Skillington
committed