Add REST tests for histogram aggregation#72322

Merged

csoulios merged 2 commits intoelastic:masterfrom csoulios:test-histogram-agg

Apr 28, 2021

+351-105

Commits on Apr 27, 2021

Added REST tests for histogram aggregation
csoulios
committed

Commits on Apr 28, 2021

Addressed reviewer comments
csoulios
committed