RFR: 8281941: Change CDS warning messages to use Unified Logging

[Calvin Cheung]

On Mon, 6 Mar 2023 21:25:38 GMT, Matias Saavedra Silva <matsaave at openjdk.org> wrote:

> As an addendum to previous commits that changed CDS logging, this replaces the remaining log messages with Unified logging. There are also old warning messages that used to be prefixed with UseSharedSpaces which have been updated along with their tests.

LGTM

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Marked as reviewed by ccheung (Reviewer).

PR: https://git.openjdk.org/jdk/pull/12890