lock device orientation during app compatibility test

Devices on test benches are usually held sideways, which leads to app
rotation during launch. While it's useful to identify such issue from an
app perspective, the app compatibility test should be isolated from such
noise for the purpose of the testing for basic level of compatibility.

Change-Id: I403f96e5d8512ca6a17b05a83d69f4b02f760a32

tests/Compatibility/src/com/android/compatibilitytest/AppCompatibility.java

@@ -17,6 +17,7 @@
 package com.android.compatibilitytest;
 
 import android.app.ActivityManager;
+import android.app.UiAutomation;
 import android.app.UiModeManager;
 import android.app.ActivityManager.ProcessErrorStateInfo;
 import android.app.ActivityManager.RunningTaskInfo;
@@ -82,10 +83,12 @@ public class AppCompatibility extends InstrumentationTestCase {
         if (workspaceLaunchTimeoutMsecs != null) {
             mWorkspaceLaunchTimeout = Integer.parseInt(workspaceLaunchTimeoutMsecs);
         }
+        getInstrumentation().getUiAutomation().setRotation(UiAutomation.ROTATION_FREEZE_0);
     }
 
     @Override
     protected void tearDown() throws Exception {
+        getInstrumentation().getUiAutomation().setRotation(UiAutomation.ROTATION_UNFREEZE);
         super.tearDown();
     }