cleanup: fix lint errors

Author: Shabirmean

retail/interactive-tutorials/src/main/java/product/ImportProductsGcs.java

@@ -52,7 +52,8 @@ public static void main(String[] args) throws IOException, InterruptedException
 
     // To check error handling, use an invalid catalog in request
     // branchName = String.format(
-    //     "projects/%s/locations/global/catalogs/invalid_catalog/branches/default_branch", projectId);
+    //     "projects/%s/locations/global/catalogs/invalid_catalog/branches/default_branch",
+    //     projectId);
 
     String gcsProductsObject = "products.json";
     // To check error handling, use an invalid product JSON.

retail/interactive-tutorials/src/test/java/product/CreateProductTest.java

@@ -41,11 +41,11 @@ public class CreateProductTest {
 
   @Before
   public void setUp() throws IOException, InterruptedException, ExecutionException {
-    String projectId = ServiceOptions.getDefaultProjectId();
-    String branchName =
+    final String projectId = ServiceOptions.getDefaultProjectId();
+    final String branchName =
         String.format(
             "projects/%s/locations/global/catalogs/default_catalog/branches/0", projectId);
-    String generatedProductId = UUID.randomUUID().toString();
+    final String generatedProductId = UUID.randomUUID().toString();
     bout = new ByteArrayOutputStream();
     PrintStream out = new PrintStream(bout);
     originalPrintStream = System.out;