This PR updates tests that were using MD5 certificates. For most of the tests, I added test cases for TLSv1.2/MD5withRSA and TLSv1.3/SHA256withRSA.
------------- Commit messages: - 8353738: Update TLS unit tests to not use certificates with MD5 signatures Changes: https://git.openjdk.org/jdk/pull/27342/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=27342&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8353738 Stats: 2551 lines in 10 files changed: 400 ins; 2046 del; 105 mod Patch: https://git.openjdk.org/jdk/pull/27342.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/27342/head:pull/27342 PR: https://git.openjdk.org/jdk/pull/27342
