chore: migrate to owlbot (#545)

Author: Neenu1995

recommender/generated/src/main/java/com/google/cloud/examples/recommender/v1beta1/SampleListRecommendations.java

@@ -17,7 +17,8 @@
 // sample-metadata:
 //   title: List Recommendations
 //   description: List recommendations for a specified project, location, and recommender.
-//   usage: gradle run -PmainClass=com.google.cloud.examples.recommender.v1beta1.SampleListRecommendations
+//   usage: gradle run
+// -PmainClass=com.google.cloud.examples.recommender.v1beta1.SampleListRecommendations
 
 package com.google.cloud.examples.recommender.v1beta1;
 

recommender/snippets/src/main/java/com/example/recommender/ListRecommendations.java

@@ -78,9 +78,11 @@ public static void listRecommendations(String projectId, String location, String
         // Indicate the request was successful
         System.out.println("List recommendations successful");
       } catch (PermissionDeniedException e) {
-        System.out.println("Permission denied for project '" + projectId
-            + "'. Ensure you have the appropriate permissions to list recommendations: \n" + e
-            .toString());
+        System.out.println(
+            "Permission denied for project '"
+                + projectId
+                + "'. Ensure you have the appropriate permissions to list recommendations: \n"
+                + e.toString());
       } catch (InvalidArgumentException e) {
         System.out.println(
             ("Invalid argument for projectId. Ensure you have 'GOOGLE_CLOUD_PROJECT' set: \n"

recommender/snippets/src/test/java/com/example/recommender/ListRecommendationsTest.java

@@ -39,8 +39,7 @@ public class ListRecommendationsTest {
   private static void requireEnvVar(String varName) {
     assertNotNull(
         System.getenv(varName),
-        "Environment variable '%s' is required to perform these tests.".format(varName)
-    );
+        "Environment variable '%s' is required to perform these tests.".format(varName));
   }
 
   @BeforeClass