Cherry-pick #16081 to 7.x: Elasticsearch index must be lowercase#16142

Merged

urso merged 2 commits intoelastic:7.xfrom urso:backport_16081_7.x

Feb 7, 2020

+208-164

Commits on Feb 6, 2020

Elasticsearch index must be lowercase (elastic#16081 )
Steffen Siering
committed
fix changelog
urso
committed