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

[Matthew Donovan]

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

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Commit messages:
 - added javadocs to new methods
 - 8303525: Refactor/cleanup open/test/jdk/javax/rmi/ssl/SSLSocketParametersTest.java

Changes: https://git.openjdk.org/jdk/pull/14932/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=14932&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8303525
  Stats: 156 lines in 2 files changed: 54 ins; 85 del; 17 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