RFR: 8322008: Exclude some CDS tests from running with -Xshare:off

[Calvin Cheung]

Some CDS tests throws a `SkippedException` when `-Xshare:off` is specified.
This change adds a `hotspot_runtime_non_cds_mode` test group for excluding those tests.

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

Commit messages:
 - 8322008: Exclude some CDS tests from running with -Xshare:off

Changes: https://git.openjdk.org/jdk/pull/19221/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=19221&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8322008
  Stats: 7 lines in 1 file changed: 7 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/19221.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/19221/head:pull/19221

PR: https://git.openjdk.org/jdk/pull/19221