fix cypress e2e ci packaging error on copy

[nomuna]

Fix #15146

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[mshima]

@atomfrede is there an easy way to generate the package with e2e.jar name instead of version.jar like maven?
This copy workaround can conflict if there is more than 1 package.

[atomfrede]

Let me check. Don't know for sure right now.

[atomfrede]

The property in gradle is bootJar.archiveFileName, but I didn't find a way to provide it via cli parameter/flag.

[mshima]

Thanks, I couldn't find either back when I did maven change.

Maybe we could delegate to gradle to copy current version.
./gradlew copy_e2e_jar to copy archiveFileName to e2e.jar.

Seems a bit more complicated.
Merging this one for now.

[atomfrede]

✔️ Have already an idea how to do it via cli parameter.