RFR: 8374990: Check include folder of JDK image for unwanted files

[Matthias Baesken]

We currently expect header files in the include folder of the jdk image.
This should be checked by a test.
(recently a check for the bin and lib folders has been added by [JDK-8374471](https://bugs.openjdk.org/browse/JDK-8374471))

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Commit messages:
 - JDK-8374990

Changes: https://git.openjdk.org/jdk/pull/29167/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=29167&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8374990
  Stats: 20 lines in 1 file changed: 18 ins; 0 del; 2 mod
  Patch: https://git.openjdk.org/jdk/pull/29167.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/29167/head:pull/29167

PR: https://git.openjdk.org/jdk/pull/29167