[7.9] [Ingest Manager] Add namespace validation (#75381)#75612

Merged

jen-huang merged 1 commit intoelastic:7.9from jen-huang:backport/7.9/pr-75381

Aug 21, 2020

+113-6

Commits on Aug 20, 2020

[Ingest Manager] Add namespace validation (elastic#75381 )
jen-huang
committed