RFR: 8303525: Refactor/cleanup open/test/jdk/javax/rmi/ssl/SSLSocketParametersTest.java [v5]

[Matthew Donovan]

> This PR refactors the SSLSocketParametersTest by removing redundant/unnecessary classes and cleans up the logic around expected exceptions.

Matthew Donovan has updated the pull request incrementally with one additional commit since the last revision:

  added reachability fence for the rmi server object

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/14932/files
  - new: https://git.openjdk.org/jdk/pull/14932/files/c2610f36..783348e3

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14932&range=04
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14932&range=03-04

  Stats: 7 lines in 1 file changed: 5 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/14932.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14932/head:pull/14932

PR: https://git.openjdk.org/jdk/pull/14932