RFR: 8283093: JMX connections should default to using an ObjectInputFilter

[Kevin Walls]

Set the management.properties  "com.sun.management.jmxremote.serial.filter.pattern" value by default, to restrict types that can be deserialized.

Use the example value from the Core Libraries guide (see section 2. Serialization Filtering / Built-in Filters / Filters for JMX), plus Subject which is needed when using authentication.

The sun/management tests run OK with this change.  The existing test sun/management/jmxremote/startstop/JMXStartStopTest.java will fail if the filter specified is made too restrictive.

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Commit messages:
 - 8283093: JMX connections should default to using an ObjectInputFilter

Changes: https://git.openjdk.org/jdk/pull/10507/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=10507&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8283093
  Stats: 2 lines in 1 file changed: 2 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/10507.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/10507/head:pull/10507

PR: https://git.openjdk.org/jdk/pull/10507