Renamed primaryUserOnly to systemUserOnly

Bug: 22958572
Change-Id: Iaea879e76ec24c1b18446addd4d575514c94625b
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index f199673..933b322 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -2126,7 +2126,7 @@
             android:theme="@style/Theme.SubSettingsDialogWhenLarge"/>
 
         <activity android:name=".CryptKeeper"
-                  androidprv:primaryUserOnly="true"
+                  androidprv:systemUserOnly="true"
                   android:immersive="true"
                   android:launchMode="singleTop"
                   android:excludeFromRecents="true"