Tracing launcher package name

I suspect that when the test starts, launcher package may be
com.google.android.setupwizard

Bug: 145935261
Change-Id: Ibf5e9785cd73762cbf2cdc8569482d77db782897
diff --git a/tests/src/com/android/launcher3/util/rule/TestStabilityRule.java b/tests/src/com/android/launcher3/util/rule/TestStabilityRule.java
index f98957e..0a8039f 100644
--- a/tests/src/com/android/launcher3/util/rule/TestStabilityRule.java
+++ b/tests/src/com/android/launcher3/util/rule/TestStabilityRule.java
@@ -102,14 +102,15 @@
 
         final String launcherVersion;
         try {
+            final String launcherPackageName = UiDevice.getInstance(getInstrumentation())
+                    .getLauncherPackageName();
+            Log.d(TAG, "Launcher package: " + launcherPackageName);
+
             launcherVersion = getInstrumentation().
                     getContext().
                     getPackageManager().
-                    getPackageInfo(
-                            UiDevice.getInstance(getInstrumentation()).
-                                    getLauncherPackageName(),
-                            0).
-                    versionName;
+                    getPackageInfo(launcherPackageName, 0)
+                    .versionName;
         } catch (PackageManager.NameNotFoundException e) {
             throw new RuntimeException(e);
         }