[jdk17] RFR: JDK-8268826: Cleanup Override in Context-Specific Deserialization Filters [v5]

[Roger Riggs]

> Remove the unnecessary special case "OVERRIDE" in jdk.serialFilterFactory property.
> Fix description in the example of a filter allowing platform classes.
> Suppress some warnings about use of SecurityManager in tests.

Roger Riggs has updated the pull request incrementally with one additional commit since the last revision:

  Enabled logging of filter factory actions and added logging.properties config file

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Changes:
  - all: https://git.openjdk.java.net/jdk17/pull/85/files
  - new: https://git.openjdk.java.net/jdk17/pull/85/files/0ac107e4..89df22e7

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk17&pr=85&range=04
 - incr: https://webrevs.openjdk.java.net/?repo=jdk17&pr=85&range=03-04

  Stats: 99 lines in 6 files changed: 91 ins; 1 del; 7 mod
  Patch: https://git.openjdk.java.net/jdk17/pull/85.diff
  Fetch: git fetch https://git.openjdk.java.net/jdk17 pull/85/head:pull/85

PR: https://git.openjdk.java.net/jdk17/pull/85