Log JVM arguments on startup

These can be very useful to have, let's have them at our fingertips in
the logs (in case the JVM dies and we can no longer retrieve them, at
least they are here).

Relates #24451

core/src/main/java/org/elasticsearch/node/Node.java

@@ -291,6 +291,7 @@ public class Node implements Closeable {
                 Constants.JVM_NAME,
                 Constants.JAVA_VERSION,
                 Constants.JVM_VERSION);
+            logger.info("JVM arguments {}", Arrays.toString(jvmInfo.getInputArguments()));
             warnIfPreRelease(Version.CURRENT, Build.CURRENT.isSnapshot(), logger);
 
             if (logger.isDebugEnabled()) {