worked on all the changes

Author: mridula-s109

x-pack/plugin/rank-rrf/src/main/java/org/elasticsearch/xpack/rank/RankRRFFeatures.java

@@ -26,7 +26,7 @@ public class RankRRFFeatures implements FeatureSpecification {
 
     @Override
     public Set<NodeFeature> getFeatures() {
-        return Set.of(LINEAR_RETRIEVER_SUPPORTED, LINEAR_RETRIEVER_TOP_LEVEL_NORMALIZER);
+        return Set.of(LINEAR_RETRIEVER_SUPPORTED);
     }
 
     @Override
@@ -38,7 +38,8 @@ public Set<NodeFeature> getTestFeatures() {
             LINEAR_RETRIEVER_MINSCORE_FIX,
             LinearRetrieverBuilder.MULTI_FIELDS_QUERY_FORMAT_SUPPORT,
             RRFRetrieverBuilder.MULTI_FIELDS_QUERY_FORMAT_SUPPORT,
-            RRFRetrieverBuilder.WEIGHTED_SUPPORT
+            RRFRetrieverBuilder.WEIGHTED_SUPPORT,
+            LINEAR_RETRIEVER_TOP_LEVEL_NORMALIZER
         );
     }
 }

x-pack/plugin/rank-rrf/src/yamlRestTest/resources/rest-api-spec/test/linear/10_linear_retriever.yml

@@ -1386,7 +1386,7 @@ setup:
 ---
 "linear retriever with top-level normalizer - l2_norm":
   - requires:
-      cluster_features: [ "linear_retriever.l2_norm", "linear_retriever.top_level_normalizer" ]
+      cluster_features: [ "linear_retriever.top_level_normalizer" ]
       reason: "Support for L2 normalization and top-level normalizer in linear retriever"
   - do:
       search:
@@ -1435,7 +1435,7 @@ setup:
 ---
 "linear retriever with top-level normalizer and per-retriever override":
   - requires:
-      cluster_features: [ "linear_retriever.l2_norm", "linear_retriever.top_level_normalizer" ]
+      cluster_features: [ "linear_retriever.top_level_normalizer" ]
       reason: "Support for L2 normalization and top-level normalizer in linear retriever"
   - do:
       search:
@@ -1517,7 +1517,7 @@ setup:
 ---
 "Linear retriever with per-retriever normalizer override":
   - requires:
-      cluster_features: [ "linear_retriever.l2_norm", "linear_retriever.top_level_normalizer" ]
+      cluster_features: [ "linear_retriever.top_level_normalizer" ]
       reason: "Support for L2 normalization and top-level normalizer in linear retriever"
   - do:
       search:
@@ -1577,7 +1577,7 @@ setup:
 ---
 "Linear retriever with mixed normalizers - inheritance test":
   - requires:
-      cluster_features: [ "linear_retriever.l2_norm" ]
+      cluster_features: [ "linear_retriever.top_level_normalizer" ]
       reason: "Support for L2 normalization"
 
   - do:
@@ -1880,7 +1880,7 @@ setup:
 ---
 "Linear retriever with large score differences and L2 normalization":
   - requires:
-      cluster_features: [ "linear_retriever.l2_norm", "linear_retriever.top_level_normalizer" ]
+      cluster_features: [ "linear_retriever.top_level_normalizer" ]
       reason: "Support for L2 normalization and top-level normalizer in linear retriever"
   - do:
       search: