[7.x] [Maps] add migration to switch tile layers with EMS_TMS source to vector tile layer (#43777)#43933

Merged

nreese merged 1 commit intoelastic:7.xfrom nreese:backport/7.x/pr-43777

Aug 24, 2019

+128-13

Commits on Aug 24, 2019

[Maps] add migration to switch tile layers with EMS_TMS source to vector tile layer (elastic#43777 )
nreese
committed