[x-pack/ftr] refactor types to be more accurate/consistent with oss#42407

Merged

spalger merged 2 commits intoelastic:masterfrom spalger:implement/x-pack-ftr-provider-context

Aug 2, 2019

+1,022-1,406

Commits on Jul 31, 2019

[x-pack/ftr] refactor types to be more accurate/consistent with oss
spalger
committed

Commits on Aug 2, 2019

Merge branch 'master' of github.com:elastic/kibana into implement/x-pack-ftr-provider-context
spalger
committed