Add vertical position multiplier to get-letterbox-style shell command

Test: manual
Change-Id: I8465dbae5e8c1a395048b3d2102d8d8fe5fb7045

services/core/java/com/android/server/wm/WindowManagerShellCommand.java

@@ -1141,6 +1141,8 @@ public class WindowManagerShellCommand extends ShellCommand {
                     + mLetterboxConfiguration.getLetterboxActivityCornersRadius());
             pw.println("Horizontal position multiplier: "
                     + mLetterboxConfiguration.getLetterboxHorizontalPositionMultiplier());
+            pw.println("Vertical position multiplier: "
+                    + mLetterboxConfiguration.getLetterboxVerticalPositionMultiplier());
             pw.println("Aspect ratio: "
                     + mLetterboxConfiguration.getFixedOrientationLetterboxAspectRatio());
             pw.println("Is horizontal reachability enabled: "