test fixes

Author: smalyshev

x-pack/plugin/esql/qa/server/multi-clusters/src/javaRestTest/java/org/elasticsearch/xpack/esql/ccq/MultiClusterSpecIT.java

@@ -214,7 +214,7 @@ protected RestClient buildClient(Settings settings, HttpHost[] localHosts) throw
     // These are lookup indices, we want them on both remotes and locals
     public static final Set<String> LOOKUP_INDICES = CSV_DATASET_MAP.values()
         .stream()
-        .filter(td -> td.settingFileName().equals("lookup-settings.json"))
+        .filter(td -> td.settingFileName() != null && td.settingFileName().equals("lookup-settings.json"))
         .map(CsvTestsDataLoader.TestDataset::indexName)
         .collect(Collectors.toSet());
 

x-pack/plugin/src/yamlRestTest/resources/rest-api-spec/test/esql/190_lookup_join.yml

@@ -145,7 +145,7 @@ basic:
   - match: {values.1: [2, "yellow"]}
 
 ---
-fails with non-lookup index:
+fails with non-lookup index v2:
   - requires:
       capabilities:
         - method: POST

x-pack/plugin/src/yamlRestTest/resources/rest-api-spec/test/esql/192_lookup_join_on_aliases.yml

@@ -186,7 +186,7 @@ alias-repeated-index:
   - match: {values.1: [2, "yellow"]}
 
 ---
-fails when alias or pattern resolves to multiple:
+fails when alias or pattern resolves to multiple v2:
   - requires:
       capabilities:
         - method: POST