Improve logging on shutdown.

If the JVM is already shutting down when the hook is scheduled, the message informing of
this is logged immediately, previously it could potentially be lost.

src/main/java/org/opentripplanner/standalone/OtpStartupInfo.java

@@ -4,6 +4,7 @@
 
 import java.util.List;
 import java.util.stream.Collectors;
+import org.opentripplanner.framework.application.ApplicationShutdownSupport;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -37,14 +38,10 @@ public static void logInfo() {
     // This is good when aggregating logs across multiple load balanced instances of OTP
     // Hint: a regexp filter like "^OTP (START|SHUTTING)" will list nodes going up/down
     LOG.info("OTP STARTING UP ({}) using Java {}", projectInfo().getVersionString(), javaVersion());
-    Runtime
-      .getRuntime()
-      .addShutdownHook(
-        new Thread(
-          () -> LOG.info("OTP SHUTTING DOWN ({})", projectInfo().getVersionString()),
-          "server-shutdown-info"
-        )
-      );
+    ApplicationShutdownSupport.addShutdownHook(
+      "server-shutdown-info",
+      () -> LOG.info("OTP SHUTTING DOWN ({})", projectInfo().getVersionString())
+    );
     LOG.info(NEW_LINE + "{}", info());
   }