Add AppStoragePreference for Spa

Also add new SettingsSpaUnitTests.

Bug: 236346018
Test: Manual with App Info page
Test: atest SettingsSpaUnitTests
Test: Manual compare generated Settings AndroidManifest.xml
Change-Id: I9f6b2ca446fd3d196792a876a6e4049c5cf97a1d
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 4865e19..836806c 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -1,4 +1,9 @@
 {
+  "presubmit": [
+    {
+      "name": "SettingsSpaUnitTests"
+    }
+  ],
   "postsubmit": [
     {
       "name": "SettingsUnitTests",