Backport of docs: samenessGroup YAML examples into release/1.16.x#17988

hc-github-team-consul-core merged 2 commits intorelease/1.16.xhashicorp/consul:release/1.16.xfrom

backport/docs/exported-services-samenessGroups/sincerely-capable-codhashicorp/consul:backport/docs/exported-services-samenessGroups/sincerely-capable-codCopy head branch name to clipboard