Cherry-pick #7871 to 6.4: Recover metrics for old apache versions#8554

Merged

jsoriano merged 2 commits intoelastic:6.4from jsoriano:backport_7871_6.4

Oct 18, 2018

+11-6

Commits on Oct 3, 2018

Recover metrics removed by mistake for old apache versions (elastic#7871 )
jsoriano
committed

Commits on Oct 17, 2018

Merge branch '6.4' into backport_7871_6.4
jsoriano
authored