First commit to restore hapi-fhir 6.3.6-SNAPSHOT changes. Add static code blocks to Application.java as well as all tests to System.setProperty("org.springframework.boot.logging.LoggingSystem", "none");

src/test/java/ca/uhn/fhir/jpa/starter/MultitenantServerR4IT.java

@@ -28,6 +28,9 @@ import static org.junit.jupiter.api.Assertions.assertEquals;
   })
 public class MultitenantServerR4IT {
 
+	static {
+		System.setProperty("org.springframework.boot.logging.LoggingSystem", "none");
+	}
 
   private static final org.slf4j.Logger ourLog = org.slf4j.LoggerFactory.getLogger(ExampleServerDstu2IT.class);
   private IGenericClient ourClient;