ESQL: Add GROUP BY ALL

Add output of the dimension list into the _timeseries column.

Part of #136253

Author: leontyevdv

server/src/main/java/org/elasticsearch/index/mapper/TimeSeriesMetadataFieldBlockLoader.java

@@ -22,10 +22,10 @@
  */
 public final class TimeSeriesMetadataFieldBlockLoader implements BlockLoader {
 
-    private final Set<String> includes;
+    private final Set<String> dimensions;
 
-    public TimeSeriesMetadataFieldBlockLoader(Set<String> includes) {
-        this.includes = Collections.unmodifiableSet(includes);
+    public TimeSeriesMetadataFieldBlockLoader(Set<String> dimensions) {
+        this.dimensions = Collections.unmodifiableSet(dimensions);
     }
 
     @Override
@@ -45,7 +45,7 @@ public RowStrideReader rowStrideReader(LeafReaderContext context) throws IOExcep
 
     @Override
     public StoredFieldsSpec rowStrideStoredFieldSpec() {
-        return StoredFieldsSpec.withSourcePaths(IgnoredSourceFieldMapper.IgnoredSourceFormat.COALESCED_SINGLE_IGNORED_SOURCE, includes);
+        return StoredFieldsSpec.withSourcePaths(IgnoredSourceFieldMapper.IgnoredSourceFormat.COALESCED_SINGLE_IGNORED_SOURCE, dimensions);
     }
 
     @Override

x-pack/plugin/esql/qa/testFixtures/src/main/resources/k8s-timeseries.csv-spec

@@ -798,7 +798,7 @@ max_deriv:double | max_rate:double | time_bucket:datetime     | cluster:keyword
 ;
 
 bare_count_over_time_outputs_dimensions
-required_capability: ts_command_v0
+required_capability: metrics_group_by_all
 required_capability: metrics_group_by_all_with_ts_dimensions
 
 TS k8s
@@ -820,7 +820,7 @@ count:long | _timeseries:keyword
 ;
 
 bare_count_over_time_with_tbucket_outputs_dimensions
-required_capability: ts_command_v0  
+required_capability: metrics_group_by_all  
 required_capability: metrics_group_by_all_with_ts_dimensions
 
 TS k8s
@@ -842,7 +842,7 @@ count:long | _timeseries:keyword
 ;
 
 bare_avg_over_time_outputs_dimensions
-required_capability: ts_command_v0  
+required_capability: metrics_group_by_all  
 required_capability: metrics_group_by_all_with_ts_dimensions
 
 TS k8s
@@ -864,7 +864,7 @@ avg:double         | _timeseries:keyword
 ;
 
 bare_avg_over_time_with_tbucket_outputs_dimensions
-required_capability: ts_command_v0  
+required_capability: metrics_group_by_all  
 required_capability: metrics_group_by_all_with_ts_dimensions
 
 TS k8s
@@ -886,7 +886,7 @@ avg:double         | _timeseries:keyword
 ;
 
 bare_sum_over_time_outputs_dimensions
-required_capability: ts_command_v0  
+required_capability: metrics_group_by_all  
 required_capability: metrics_group_by_all_with_ts_dimensions
 
 TS k8s
@@ -908,7 +908,7 @@ sum:double | _timeseries:keyword
 ;
 
 bare_sum_over_time_with_tbucket_outputs_dimensions
-required_capability: ts_command_v0  
+required_capability: metrics_group_by_all  
 required_capability: metrics_group_by_all_with_ts_dimensions
 
 TS k8s
@@ -930,7 +930,7 @@ sum:double | _timeseries:keyword
 ;
 
 bare_rate_outputs_dimensions
-required_capability: ts_command_v0  
+required_capability: metrics_group_by_all
 required_capability: metrics_group_by_all_with_ts_dimensions
 
 TS k8s
@@ -952,7 +952,7 @@ rate:double        | _timeseries:keyword
 ;
 
 bare_rate_with_tbucket_outputs_dimensions
-required_capability: ts_command_v0  
+required_capability: metrics_group_by_all  
 required_capability: metrics_group_by_all_with_ts_dimensions
 
 TS k8s
@@ -974,7 +974,7 @@ rate:double        | _timeseries:keyword
 ;
 
 wrapped_rate
-required_capability: ts_command_v0
+required_capability: metrics_group_by_all
 required_capability: metrics_group_by_all_with_ts_dimensions
 
 TS k8s