RFR: 7028: The ids are wrong in the agent tests

[Marcus Hirt]

Even more important, since we may want to use them as the event name.

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Commit messages:
 - 7028: The ids are wrong in the agent tests

Changes: https://git.openjdk.java.net/jmc/pull/171/files
 Webrev: https://webrevs.openjdk.java.net/?repo=jmc&pr=171&range=00
  Issue: https://bugs.openjdk.java.net/browse/JMC-7028
  Stats: 5 lines in 1 file changed: 0 ins; 0 del; 5 mod
  Patch: https://git.openjdk.java.net/jmc/pull/171.diff
  Fetch: git fetch https://git.openjdk.java.net/jmc pull/171/head:pull/171

PR: https://git.openjdk.java.net/jmc/pull/171