fix require statement

Author: kevinfwl

dd-smoke-tests/springboot-openliberty/src/test/groovy/datadog/smoketest/SpringBootOpenLibertySnapshotTest.groovy

@@ -5,7 +5,7 @@ import okhttp3.Response
 import spock.lang.Requires
 import spock.lang.Shared
 
-@Requires({ !System.getProperty("").contains("IBM J9 VM") && System.getenv("CI") != "true" })
+@Requires({ !System.getProperty("java.vm.name").contains("IBM J9 VM") && System.getenv("CI") != "true" })
 class SpringBootOpenLibertySnapshotTest extends AbstractTestAgentSmokeTest {
 
   @Shared