[9.0] Ignore _JAVA_OPTIONS (#124843) #124945
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The JVM has a couple ways that Java options can be passed. In Elasticsearch we ignore these common patterns, instead using our own bespoke mechanisms for setting options (ES_JAVA_OPTS, etc). The primary reason for this is some systems like Ubuntu setting these options globally and then affecting Elasticsearch, often in ways that cause Elasticsearch to fail to start. This commit ignores _JAVA_OPTIONS, which is a little known environment variable that the JVM may pick up options from.
rjernst added :Core/Infra/CLI 
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Backports the following commits to 9.0: