fix: kotlin and java maven example with maven.test.skip property (#1061)
fix: kotlin and java maven example with maven.test.skip property (#1061)

Fix fix kotlin and java maven example which would fail when users build the project with argument `-Dmaven.test.skip=true` .

Co-authored-by: Pavel Semyonov <9fef4c3b275d1b1cf2d37bb4fde2472935675f02@users.noreply.github.com>
hltj/kotlin-web-site-cn,JetBrains/kotlin-web-site,JetBrains/kotlin-web-site,JetBrains/kotlin-web-site,hltj/kotlin-web-site-cn,JetBrains/kotlin-web-site,JetBrains/kotlin-web-site,hltj/kotlin-web-site-cn,hltj/kotlin-web-site-cn,hltj/kotlin-web-site-cn,hltj/kotlin-web-site-cn,JetBrains/kotlin-web-site