Bug 1565563 - Add en-US to search configurations to test. r=Standard8,mconnor

Differential Revision: https://phabricator.services.mozilla.com/D37869

--HG--
extra : moz-landing-system : lando

toolkit/components/search/tests/xpcshell/searchconfigs/head_searchconfig.js

@@ -243,7 +243,9 @@ class SearchConfigTest {
     const data = await OS.File.read(do_get_file("all-locales").path, {
       encoding: "utf-8",
     });
-    return data.split("\n").filter(e => e != "");
+    // "en-US" is not in all-locales as it is the default locale
+    // add it manually to ensure it is tested.
+    return [...data.split("\n").filter(e => e != ""), "en-US"];
   }
 
   /**

toolkit/components/search/tests/xpcshell/searchconfigs/test_ebay.js

@@ -104,7 +104,7 @@ const test = new SearchConfigTest({
           locales: { matches: ["en-US"] },
         },
       ],
-      excluded: [{ regions: ["au"] }],
+      excluded: [{ regions: ["au", "be", "ca", "ch", "gb", "ie", "nl"] }],
       searchUrlEnd: "711-53200-19255-0/1",
     },
     {