HDDS-12093. Exclude generated code when verifying import restrictions

[adoroszlai]

What changes were proposed in this pull request?

Stop spending time analyzing generated code when validating import restrictions. Saves around 6 seconds, which is not much for a normal build, but about 10% for local build when skipping tests.

https://issues.apache.org/jira/browse/HDDS-12093

How was this patch tested?

mvn -DskipShade -DskipTests -Dskip.installnodenpm -Dskip.npx

Before:

[INFO] Apache Ozone HDDS Client Interface ................. SUCCESS [  5.458 s]
[INFO] Apache Ozone HDDS Admin Interface .................. SUCCESS [  1.606 s]
[INFO] Apache Ozone HDDS Server Interface ................. SUCCESS [  2.077 s]
[INFO] Apache Ozone Client Interface ...................... SUCCESS [ 11.998 s]
[INFO] Apache Ozone Storage Interface ..................... SUCCESS [  0.367 s]

After:

[INFO] Apache Ozone HDDS Client Interface ................. SUCCESS [  3.858 s]
[INFO] Apache Ozone HDDS Admin Interface .................. SUCCESS [  1.109 s]
[INFO] Apache Ozone HDDS Server Interface ................. SUCCESS [  1.481 s]
[INFO] Apache Ozone Client Interface ...................... SUCCESS [  7.201 s]
[INFO] Apache Ozone Storage Interface ..................... SUCCESS [  0.421 s]

CI:
https://github.com/adoroszlai/ozone/actions/runs/12805099339

[nandakumar131]

@adoroszlai, a big +1 for all these improvements.

[nandakumar131]

+1, LGTM.

[nandakumar131]

Thanks @adoroszlai for the contribution!

[adoroszlai]

Thanks a lot @nandakumar131 for reviewing and merging this.