Cherry-pick to 7.x: Fixing logic to keep list of unique cluster UUIDs (#22808)#22816

Merged

ycombinator merged 1 commit intoelastic:7.xfrom ycombinator:backport/7.x/pr-22808

Dec 1, 2020

+620-13

Commits on Dec 1, 2020

Fixing logic to keep list of unique cluster UUIDs (#22808 )
ycombinator
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