RFR: 8327689: RISC-V: adjust test filters of zfh extension

[Hamlin Li]

Hi,
Can you review this simple patch?
Thanks

FYI:
test filter `vm.cpu.features ~= ".*zfh,.*"` could be adjusted to `vm.cpu.features ~= ".*zfh.*"` according to comment at https://github.com/openjdk/jdk/pull/17698#discussion_r1517349407

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

Commit messages:
 - Initial commit

Changes: https://git.openjdk.org/jdk/pull/18169/files
 Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=18169&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8327689
  Stats: 4 lines in 4 files changed: 0 ins; 0 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/18169.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/18169/head:pull/18169

PR: https://git.openjdk.org/jdk/pull/18169