RFR: 7859: Add 2022-03 target platform

[Marcus Hirt]

...and switch to using it by default.

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Commit messages:
 - 7859: Add 2022-03 target platform

Changes: https://git.openjdk.java.net/jmc/pull/394/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jmc&pr=394&range=00
  Issue: https://bugs.openjdk.java.net/browse/JMC-7859
  Stats: 51 lines in 5 files changed: 43 ins; 3 del; 5 mod
  Patch: https://git.openjdk.java.net/jmc/pull/394.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/394/head:pull/394

PR: https://git.openjdk.java.net/jmc/pull/394