Add LocaleManager host-side CTS suite to TEST_MAPPING.

Also modify locale manager shell output to be consistent with language tag format.

Bug: 202362940
Test: atest CtsLocaleManagerHostTestCases
Change-Id: I4928950d3dc04b4d5acbc93ce6c6993b870d179d

services/core/java/com/android/server/locales/LocaleManagerShellCommand.java

@@ -133,7 +133,7 @@ public class LocaleManagerShellCommand extends ShellCommand {
             try {
                 LocaleList locales = mBinderService.getApplicationLocales(packageName, userId);
                 getOutPrintWriter().println("Locales for " + packageName
-                        + " for user " + userId + " are " + locales);
+                        + " for user " + userId + " are [" + locales.toLanguageTags() + "]");
             } catch (RemoteException e) {
                 getOutPrintWriter().println("Remote Exception: " + e);
             } catch (IllegalArgumentException e) {

services/core/java/com/android/server/locales/TEST_MAPPING

@@ -10,6 +10,9 @@
     },
     {
       "name": "CtsLocaleManagerTestCases"
+    },
+    {
+      "name": "CtsLocaleManagerHostTestCases"
     }
   ]
-}
+}