Start DeviceAdminSettings in a new task from support dialog.

Bug: 28998790
Change-Id: Ia43d6e719124e0908ec8ccb8c1ba7e80b5297096

src/com/android/settings/ShowAdminSupportDetailsDialog.java

@@ -161,6 +161,7 @@ public class ShowAdminSupportDetailsDialog extends Activity
                                     new UserHandle(enforcedAdmin.userId));
                         } else {
                             intent.setClass(activity, Settings.DeviceAdminSettingsActivity.class);
+                            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                             // Activity merges both managed profile and parent users
                             // admins so show as same user as this activity.
                             activity.startActivity(intent);