Support Java 8 for opensearch-rest-client#3181

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dlvenable wants to merge 2 commits intoopensearch-project:mainfrom dlvenable:rest-client-java8-compatibility

+36-8

Commits on May 4, 2022

Set the source and target compatibility for the opensearch-rest-client to Java 8. This project uses a client test library which is now also supporting Java 8.
dlvenable
committed

Commits on May 6, 2022

Build the test and low-level REST clients using Java 8.
dlvenable
committed