RFR: 8028127: Regtest java/security/Security/SynchronizedAccess.java is incorrect [v2]

[Fernando Guallini]

> As highlighted in the bug description, The test **security/Security/SynchronizedAccess.java** have some issues:
> 
> 1. it needs to implement the sigalg, otherwise it throws java.security.NoSuchAlgorithmException . Even though it does not fail as it catches the exception, it never reaches the removeProvider loop. Also, adding an extra assertion to verify the local providers were actually removed.
> 2. It is reassigning the **provs** variable with Security.getProviders(). This will start adding/removing some of the system providers, in addition to the local providers, which it is not the test intent.
> 3. Adding othervm flag to run in isolation.
> 
> Test runs in tier2

Fernando Guallini has updated the pull request with a new target base due to a merge or a rebase. The incremental webrev excludes the unrelated changes brought in by the merge/rebase. The pull request contains three additional commits since the last revision:

 - Merge branch 'openjdk:master' into JDK-8028127
 - Merge branch 'openjdk:master' into JDK-8028127
 - Regtest java/security/Security/SynchronizedAccess.java is  incorrect.

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/19480/files
  - new: https://git.openjdk.org/jdk/pull/19480/files/61b56f0a..1549cc59

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=19480&range=01
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=19480&range=00-01

  Stats: 5703 lines in 200 files changed: 3363 ins; 1647 del; 693 mod
  Patch: https://git.openjdk.org/jdk/pull/19480.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19480/head:pull/19480

PR: https://git.openjdk.org/jdk/pull/19480