Add number of enterprise-installed apps to Privacy Settings page

This CL adds information about the number of apps that were installed
by the admin to the Enterprise Privacy Settings page.

Test: make RunSettingsRoboTests
Bug: 32692748

Change-Id: Ib710a1249db6d285da962122fd3dfb35a43752a1

src/com/android/settings/enterprise/EnterprisePrivacySettings.java

@@ -64,6 +64,7 @@ public class EnterprisePrivacySettings extends DashboardFragment {
         controllers.add(new AlwaysOnVpnPrimaryUserPreferenceController(context));
         controllers.add(new AlwaysOnVpnManagedProfilePreferenceController(context));
         controllers.add(new GlobalHttpProxyPreferenceController(context));
+        controllers.add(new EnterpriseInstalledPackagesPreferenceController(context));
         return controllers;
     }