update tests to use RESOURCE_PROJECT_PREFIX defined in HttpBigQueryRpc

Author: ldetmer

java-bigquery/google-cloud-bigquery/src/main/java/com/google/cloud/bigquery/spi/v2/HttpBigQueryRpc.java

@@ -90,7 +90,7 @@ public class HttpBigQueryRpc implements BigQueryRpc {
   private static final String BASE_RESUMABLE_URI = "upload/bigquery/v2/projects/";
   static final String HTTP_TRACING_DEV_GATE_PROPERTY =
       "com.google.cloud.bigquery.http.tracing.dev.enabled";
-  private static final String RESOURCE_PROJECT_PREFIX = "//bigquery.googleapis.com/projects/";
+  static final String RESOURCE_PROJECT_PREFIX = "//bigquery.googleapis.com/projects/";
   // see:
   // https://cloud.google.com/bigquery/loading-data-post-request#resume-upload
   private static final int HTTP_RESUME_INCOMPLETE = 308;

java-bigquery/google-cloud-bigquery/src/test/java/com/google/cloud/bigquery/spi/v2/HttpBigQueryRpcTest.java

@@ -15,6 +15,7 @@
  */
 package com.google.cloud.bigquery.spi.v2;
 
+import static com.google.cloud.bigquery.spi.v2.HttpBigQueryRpc.RESOURCE_PROJECT_PREFIX;
 import static com.google.common.truth.Truth.assertThat;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
@@ -78,7 +79,6 @@ public class HttpBigQueryRpcTest {
   private static final String JOB_ID = "test-job";
   private static final String LOCATION = "test-location";
 
-  private static final String RESOURCE_PROJECT_PREFIX = "//bigquery.googleapis.com/projects/";
   private InMemorySpanExporter spanExporter;
   private MockLowLevelHttpResponse mockResponse;
   private String lastRequestMethod;