test: skip PGErrorCode assert check for experimental host

Author: sagnghos

google-cloud-spanner/src/test/java/com/google/cloud/spanner/it/ITQueryTest.java

@@ -17,6 +17,7 @@
 package com.google.cloud.spanner.it;
 
 import static com.google.cloud.spanner.testing.EmulatorSpannerHelper.isUsingEmulator;
+import static com.google.cloud.spanner.testing.ExperimentalHostHelper.isExperimentalHost;
 import static com.google.common.base.Strings.isNullOrEmpty;
 import static com.google.common.truth.Truth.assertThat;
 import static java.util.Arrays.asList;
@@ -143,7 +144,10 @@ public void badQuery() {
           exception.getMessage().contains("column \"apples\" does not exist"));
       // See https://www.postgresql.org/docs/current/errcodes-appendix.html
       // '42703' == undefined_column
-      assertEquals("42703", exception.getPostgreSQLErrorCode());
+      // Skipping the check for experimental host - b/473270453
+      if (!isExperimentalHost()) {
+        assertEquals("42703", exception.getPostgreSQLErrorCode());
+      }
     } else {
       assertTrue(
           exception.getMessage(), exception.getMessage().contains("Unrecognized name: Apples"));