Fix deprication warnings about node.roles. Now roles described as a list#124

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peterzhuamazon merged 2 commits intoopensearch-project:mainfrom

Sebor:fix-deprecated-node-roles

Nov 9, 2021

Commits on Nov 4, 2021

Fix deprication warnings about node.roles. Now roles described as a list
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committed

Commits on Nov 5, 2021

Merge branch 'main' into fix-deprecated-node-roles
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