RFR: 8283093: JMX connections should default to using an ObjectInputFilter [v2]

[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.

Kevin Walls has updated the pull request incrementally with one additional commit since the last revision:

  Update test to check default filter in place.

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Changes:
  - all: https://git.openjdk.org/jdk/pull/10507/files
  - new: https://git.openjdk.org/jdk/pull/10507/files/7d171854..78e5c897

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=10507&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=10507&range=00-01

  Stats: 25 lines in 1 file changed: 16 ins; 1 del; 8 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