[jdk11u-dev] RFR: 8292297: Fix up loading of override java.security properties file

Tue Jul 4 11:01:12 UTC 2023

I backport this for parity with 11.0.20-oracle from 17.

Patching the actual change applied clean.
I only had to resolve override.props in the test.
Also, I had to replace 
security.provider.3=sun.security.ssl.SunJSSE
by
security.provider.3=SunJSSE
in that file to make the test pass.

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Commit messages:
 - Fix test
 - Backport 4be52ee572e4fd65f2ac66d5e78c711c8eb6a61e

Changes: https://git.openjdk.org/jdk11u-dev/pull/2021/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk11u-dev&pr=2021&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8292297
  Stats: 166 lines in 3 files changed: 69 ins; 70 del; 27 mod
  Patch: https://git.openjdk.org/jdk11u-dev/pull/2021.diff
  Fetch: git fetch https://git.openjdk.org/jdk11u-dev.git pull/2021/head:pull/2021

PR: https://git.openjdk.org/jdk11u-dev/pull/2021