[TEST] Replace _source.mode with index.mapping.source.mode in integration tests (#115926)

* Replace _source.mode with index.mapping.source.mode in integration tests

* fix tests

* revert 40_source_mode_setting.yml

Author: kkrik-es

modules/aggregations/src/yamlRestTest/resources/rest-api-spec/test/aggregations/top_hits.yml

@@ -356,9 +356,10 @@ synthetic _source:
       indices.create:
         index: test_synthetic
         body:
+          settings:
+            index:
+              mapping.source.mode: synthetic
           mappings:
-            _source:
-              mode: synthetic
             properties:
               page:
                 type: keyword

modules/lang-painless/src/yamlRestTest/resources/rest-api-spec/test/painless/50_script_doc_values.yml

@@ -180,9 +180,9 @@ setup:
         body:
           settings:
             number_of_shards: 1
+            index:
+              mapping.source.mode: synthetic
           mappings:
-            _source:
-              mode: synthetic
             properties:
               boolean:
                 type: boolean
@@ -5630,9 +5630,9 @@ version and sequence number synthetic _source:
         body:
           settings:
             number_of_shards: 1
+            index:
+              mapping.source.mode: synthetic
           mappings:
-            _source:
-              mode: synthetic
             properties:
               keyword:
                 type: keyword

modules/mapper-extras/src/yamlRestTest/resources/rest-api-spec/test/match_only_text/10_basic.yml

@@ -285,9 +285,10 @@ synthetic_source:
       indices.create:
         index: synthetic_source_test
         body:
+          settings:
+            index:
+              mapping.source.mode: synthetic
           mappings:
-            _source:
-              mode: synthetic
             properties:
               foo:
                 type: match_only_text
@@ -362,9 +363,10 @@ synthetic_source with copy_to:
       indices.create:
         index: synthetic_source_test
         body:
+          settings:
+            index:
+              mapping.source.mode: synthetic
           mappings:
-            _source:
-              mode: synthetic
             properties:
               foo:
                 type: match_only_text

modules/mapper-extras/src/yamlRestTest/resources/rest-api-spec/test/rank_feature/30_synthetic_source.yml

@@ -7,9 +7,10 @@ setup:
       indices.create:
         index: test
         body:
+          settings:
+            index:
+              mapping.source.mode: synthetic
           mappings:
-            _source:
-              mode: synthetic
             properties:
               pagerank:
                 type: rank_feature

modules/mapper-extras/src/yamlRestTest/resources/rest-api-spec/test/rank_features/20_synthetic_source.yml

@@ -7,9 +7,10 @@ setup:
       indices.create:
         index: test
         body:
+          settings:
+            index:
+              mapping.source.mode: synthetic
           mappings:
-            _source:
-              mode: synthetic
             properties:
               tags:
                 type: rank_features

modules/mapper-extras/src/yamlRestTest/resources/rest-api-spec/test/search-as-you-type/30_synthetic_source.yml

@@ -7,9 +7,10 @@ setup:
       indices.create:
         index: test
         body:
+          settings:
+            index:
+              mapping.source.mode: synthetic
           mappings:
-            _source:
-              mode: synthetic
             properties:
               a_field:
                 type: search_as_you_type

modules/mapper-extras/src/yamlRestTest/resources/rest-api-spec/test/token_count/10_basic.yml

@@ -42,9 +42,10 @@
       indices.create:
         index:  test
         body:
+          settings:
+            index:
+              mapping.source.mode: synthetic
           mappings:
-            _source:
-              mode: synthetic
             properties:
               count:
                 type: token_count

modules/parent-join/src/yamlRestTest/resources/rest-api-spec/test/60_synthetic_source.yml

@@ -7,9 +7,10 @@ supported:
       indices.create:
         index: test
         body:
+          settings:
+            index:
+              mapping.source.mode: synthetic
           mappings:
-            _source:
-              mode: synthetic
             properties:
               join_field:
                 type: join

modules/percolator/src/yamlRestTest/resources/rest-api-spec/test/10_basic.yml

@@ -137,9 +137,10 @@
       indices.create:
         index: queries_index
         body:
+          settings:
+            index:
+              mapping.source.mode: synthetic
           mappings:
-            _source:
-              mode: synthetic
             properties:
               query:
                 type: percolator

modules/reindex/src/yamlRestTest/resources/rest-api-spec/test/reindex/110_synthetic_source.yml

@@ -3,9 +3,10 @@ setup:
       indices.create:
         index: synthetic
         body:
+          settings:
+            index:
+              mapping.source.mode: synthetic
           mappings:
-            _source:
-              mode: synthetic
             properties:
               kwd:
                 type: keyword