Jenkins build is still unstable: HBase-Nightly-s390x #383

See

Build failed in Jenkins: HBase-Nightly-ARM #923

See Changes: [Istvan Toth] HBASE-28518 Allow specifying a filter for the REST multiget endpoint [noreply] HBASE-28500 Rest Java client library assumes stateless servers (#5804) [noreply] HBASE-28292 Make