CloudAsset: Update asset lib to v1 for ListAssets sample code (#760)

* CloudAsset: Update asset lib to v1 for ListAssets sample code

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/master/packages/owl-bot/README.md

Co-authored-by: Neenu Shaji <Neenu1995@users.noreply.github.com>
Co-authored-by: Averi Kitsch <akitsch@google.com>
Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

Author: 4 people

asset/src/main/java/com/example/asset/ListAssetsExample.java

@@ -16,16 +16,16 @@
 
 package com.example.asset;
 
-// [START asset_quickstart_list_assets]
-// Imports the Google Cloud client library
-
+import com.google.cloud.asset.v1.AssetServiceClient;
+import com.google.cloud.asset.v1.AssetServiceClient.ListAssetsPagedResponse;
+import com.google.cloud.asset.v1.ContentType;
+import com.google.cloud.asset.v1.ListAssetsRequest;
 import com.google.cloud.asset.v1.ProjectName;
-import com.google.cloud.asset.v1p5beta1.AssetServiceClient;
-import com.google.cloud.asset.v1p5beta1.AssetServiceClient.ListAssetsPagedResponse;
-import com.google.cloud.asset.v1p5beta1.ContentType;
-import com.google.cloud.asset.v1p5beta1.ListAssetsRequest;
 import java.util.Arrays;
 
+// [START asset_quickstart_list_assets]
+// Imports the Google Cloud client library
+
 public class ListAssetsExample {
 
   public static void listAssets() throws Exception {
@@ -38,7 +38,7 @@ public static void listAssets() throws Exception {
     String[] assetTypes = {"YOUR_ASSET_TYPES_TO_LIST"};
     // The asset content type to list. E.g., ContentType.CONTENT_TYPE_UNSPECIFIED.
     // See full list of content types at
-    // https://cloud.google.com/asset-inventory/docs/reference/rpc/google.cloud.asset.v1p5beta1#contenttype
+    // https://cloud.google.com/asset-inventory/docs/reference/rpc/google.cloud.asset.v1#contenttype
     ContentType contentType = ContentType.CONTENT_TYPE_UNSPECIFIED;
     listAssets(projectId, assetTypes, contentType);
   }

asset/src/test/java/com/example/asset/ListAssets.java

@@ -19,7 +19,7 @@
 import static com.google.common.truth.Truth.assertThat;
 
 import com.google.cloud.ServiceOptions;
-import com.google.cloud.asset.v1p5beta1.ContentType;
+import com.google.cloud.asset.v1.ContentType;
 import java.io.ByteArrayOutputStream;
 import java.io.PrintStream;
 import org.junit.After;