Support JDK 18 EA builds

[reta]

Signed-off-by: Andriy Redko [email protected]

Description

Since the integration of [1] into JDK-18, setting SecurityManager now requires JVM command line option to enable it explicitly. Running OpenSearch server or tests on latest JDK-18 EA builds fails with exception:

Exception in thread "main" java.lang.UnsupportedOperationException: The Security Manager is deprecated and will be removed in a future release
        at java.base/java.lang.System.setSecurityManager(System.java:416)
        at org.opensearch.bootstrap.OpenSearch.main(OpenSearch.java:91)

[1] https://bugs.openjdk.java.net/browse/JDK-8270380

Issues Resolved

Part of #1687

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff

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[opensearch-ci-bot]

Can one of the admins verify this patch?

[opensearch-ci-bot]

✅   Gradle Check success 68e3ba5
Log 1462

Reports 1462

[dblock]

How timely given the log4j RCE to get rid of security manager 😠

[dblock]

I forget, what did we do for 1.x? Are we backporting this?

[reta]

@dblock we could, yeah, will send the PR shortly