[7.x] add validation for nested filter in find API (#51847)#52219

Merged

XavierM merged 1 commit intoelastic:7.xfrom XavierM:backport/7.x/pr-51847

Dec 4, 2019

+137-53

Commits on Dec 4, 2019

add validation for nested filter in find API (elastic#51847 )
XavierM
committed