[7.5] [DOCS] Added images to automating report generation (#64333)#64356

Merged

KOTungseth merged 3 commits intoelastic:7.5from

KOTungseth:backport/7.5/pr-64333

Apr 24, 2020

Commits on Apr 23, 2020

Commits on Apr 24, 2020

Merge branch '7.5' into backport/7.5/pr-64333
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