Add appsearch multiuser test

Test: atest --rebuild-module-info CtsAppSearchHostTestCases
Bug: 173553485
Change-Id: Ifb11ce65aa5fc8fc27846f715976dc7af3f92e00
diff --git a/apex/appsearch/service/java/com/android/server/appsearch/TEST_MAPPING b/apex/appsearch/service/java/com/android/server/appsearch/TEST_MAPPING
index ca5b884..38cd7a8 100644
--- a/apex/appsearch/service/java/com/android/server/appsearch/TEST_MAPPING
+++ b/apex/appsearch/service/java/com/android/server/appsearch/TEST_MAPPING
@@ -4,6 +4,9 @@
       "name": "CtsAppSearchTestCases"
     },
     {
+      "name": "CtsAppSearchHostTestCases"
+    },
+    {
       "name": "FrameworksServicesTests",
       "options": [
         {
diff --git a/apex/appsearch/testing/Android.bp b/apex/appsearch/testing/Android.bp
index 3c5082e..2518394 100644
--- a/apex/appsearch/testing/Android.bp
+++ b/apex/appsearch/testing/Android.bp
@@ -31,6 +31,7 @@
         "truth-prebuilt",
     ],
     visibility: [
+        "//cts/hostsidetests/appsearch",
         "//cts/tests/appsearch",
         "//vendor:__subpackages__",
     ],