Add Hdfs patcher to replace deprecated Subject method #119779
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This PR finds calls to a (long deprecated) Java API
Subject#getSubjectwith calls toSubject#current.Subject#getSubjectis problematic as it checks if the SM is allowed ("-Djava.security.manager=allow"), and it fails if it isn't; also, as expected,Subject#getSubjectis effectively removed from JDK 24 (throws UnsupportedOperationException).Hadoop calls that API.
It seems Hadoop is making the change to replace
Subject#getSubject(see https://issues.apache.org/jira/browse/HADOOP-19212 and apache/hadoop#7081); however we don't know when this will happen.