RFR: 8343395: SSLLogger doesn't work for formatted messages [v4]

[Sean Coffey]

> SLSLogger is broken when used with with `System.Logger` (-Djavax.net.debug mode)
> 
> SSL Debug messages don't use format specifiers. As a result, any custom format data isn't printed. Proposed solution is to append the SSL custom format output to the original debug message. Similar approach used for `SSLConsoleLogger ` mode.
> 
> Used this opportunity to delete some old commented code and to replace use of `"\n"` with `System.lineSeparator()`
> 
> DebugPropertyValuesTest also updated to test new logic.

Sean Coffey has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains five commits:

 - Merge branch 'master' into 8343395-formatter
 - Merge branch 'master' into 8343395-formatter
 - Merge branch 'master' into 8343395-formatter
 - Text Blocks use \n by default
 - 8343395

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Changes: https://git.openjdk.org/jdk/pull/25934/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=25934&range=03
  Stats: 30 lines in 3 files changed: 8 ins; 10 del; 12 mod
  Patch: https://git.openjdk.org/jdk/pull/25934.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/25934/head:pull/25934

PR: https://git.openjdk.org/jdk/pull/25934