Added fix for flaky test-suite LettuceAclIntegrationTests

[hermya]

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This PR fixes intermittent failures mentioned in issue #3061.

Fixed using Nondex

Try Nondex locally

For tests in LettuceAclIntegrationTests

mvn edu.illinois:nondex-maven-plugin:2.1.7:nondex -DnondexMode=ONE -DnondexRuns=5 -Dtest=org.springframework.data.redis.connection.lettuce.LettuceAclIntegrationTests

For tests in the entire module

mvn edu.illinois:nondex-maven-plugin:2.1.7:nondex