Add exact alarm permission in CtsForceStopHelper

Needs the permission to verify that the app didn't force stop.

Test: Manual. CTS Verifier -> Recent Task Removal Test.

Fixes: 185548572
Change-Id: Ie5eda857ab677be9e1a0a36f39e3792a63c0971c
diff --git a/apps/ForceStopHelperApp/AndroidManifest.xml b/apps/ForceStopHelperApp/AndroidManifest.xml
index 2bd9b0d..5f3ba67 100644
--- a/apps/ForceStopHelperApp/AndroidManifest.xml
+++ b/apps/ForceStopHelperApp/AndroidManifest.xml
@@ -18,6 +18,7 @@
           package="com.android.cts.forcestophelper" >
 
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM" />
 
     <application android:label="Force stop helper app">
         <activity android:name=".RecentTaskActivity"