[jdk21u-dev] RFR: 8341138: Rename jtreg property docker.support as container.support

Thu Sep 11 16:30:00 UTC 2025

I backport this to make later backports easier. 
Unfortunately [8360518: Docker tests do not work when asan is configured](https://github.com/openjdk/jdk/commit/01b15bc1f961f43ae11db0c15f45763c4ec4180b)
was backported already, so I had to resolve almost all files.
Might be clean anyways.

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Commit messages:
 - backport 41ee582df8c65f2f26b21e46784cf0bc4ece0585

Changes: https://git.openjdk.org/jdk21u-dev/pull/2195/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk21u-dev&pr=2195&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341138
  Stats: 54 lines in 26 files changed: 6 ins; 0 del; 48 mod
  Patch: https://git.openjdk.org/jdk21u-dev/pull/2195.diff
  Fetch: git fetch https://git.openjdk.org/jdk21u-dev.git pull/2195/head:pull/2195

PR: https://git.openjdk.org/jdk21u-dev/pull/2195