Cherry-pick #18918 to 7.x: Move autodiscover ec2 documentation under autodiscover#18932

Merged

kaiyan-sheng merged 1 commit intoelastic:7.xfrom kaiyan-sheng:backport_18918_7.x

Jun 3, 2020

+7-8

Commits on Jun 3, 2020

Move autodiscover ec2 documentation from hints based autodiscover to Autodiscover (#18918 )
kaiyan-sheng
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