RFR: 8313306: More sensible reservation logging [v8]

[Sonia Zaldana Calles]

> This PR implements more specialized logs for virtual memory APIs in the “os” namespace. It uses “os” and “map” as log tags using unified JVM logging as introduced in JEP 158 (https://openjdk.org/jeps/158). 
> 
> As far as testing is concerned, I have added a regression test to verify the logging is working accordingly.

Sonia Zaldana Calles has updated the pull request incrementally with one additional commit since the last revision:

  adding test flag

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Changes:
  - all: https://git.openjdk.org/jdk/pull/17356/files
  - new: https://git.openjdk.org/jdk/pull/17356/files/91bfcea3..7b3f8b38

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=17356&range=07
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=17356&range=06-07

  Stats: 6 lines in 1 file changed: 6 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/17356.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/17356/head:pull/17356

PR: https://git.openjdk.org/jdk/pull/17356