Update language to comply with Android's inclusive language guidance

See https://source.android.com/setup/contribute/respectful-code for reference

Bug: 161896447
Test: robotest & manual
Change-Id: Idf3cb1eca8b814d5863f286f6a46f79fc5e7a967

tests/robotests/src/com/android/settings/slices/SliceControllerInXmlCodeInspector.java

@@ -54,13 +54,13 @@ public class SliceControllerInXmlCodeInspector extends CodeInspector {
     );
 
     private final List<String> mXmlDeclaredControllers = new ArrayList<>();
-    private final List<String> mGrandfatheredClasses = new ArrayList<>();
+    private final List<String> mExemptedClasses = new ArrayList<>();
 
     private final String ERROR_MISSING_CONTROLLER =
             "The following controllers were expected to be declared by "
                     + "'settings:controller=Controller_Class_Name' in their corresponding Xml. "
                     + "If it should not appear in XML, add the controller's classname to "
-                    + "grandfather_slice_controller_not_in_xml. Controllers:\n";
+                    + "exempt_slice_controller_not_in_xml. Controllers:\n";
 
     private final Context mContext;
     private final SearchFeatureProvider mSearchProvider;
@@ -73,8 +73,8 @@ public class SliceControllerInXmlCodeInspector extends CodeInspector {
         mFakeFeatureFactory = FakeFeatureFactory.setupForTest();
         mFakeFeatureFactory.searchFeatureProvider = mSearchProvider;
 
-        CodeInspector.initializeGrandfatherList(mGrandfatheredClasses,
-                "grandfather_slice_controller_not_in_xml");
+        CodeInspector.initializeExemptList(mExemptedClasses,
+                "exempt_slice_controller_not_in_xml");
         initDeclaredControllers();
     }
 
@@ -117,7 +117,7 @@ public class SliceControllerInXmlCodeInspector extends CodeInspector {
         }
 
         // Removed whitelisted classes
-        missingControllersInXml.removeAll(mGrandfatheredClasses);
+        missingControllersInXml.removeAll(mExemptedClasses);
 
         final String missingControllerError =
                 buildErrorMessage(ERROR_MISSING_CONTROLLER, missingControllersInXml);