Add id_15 (opensearch-project#20557)

Signed-off-by: Prudhvi Godithi <pgodithi@amazon.com>

Author: prudhvigodithi

.github/benchmark-configs.json

@@ -240,5 +240,23 @@
       "data_instance_config": "4vCPU, 32G Mem, 16G Heap"
     },
     "baseline_cluster_config": "x64-r5.xlarge-1-shard-0-replica-snapshot-baseline"
+  },
+  "id_15": {
+    "description": "Intra-segment search test-procedure for big5 with concurrent segment search mode as auto and force partition strategy",
+    "supported_major_versions": ["3"],
+    "cluster-benchmark-configs": {
+      "SINGLE_NODE_CLUSTER": "true",
+      "MIN_DISTRIBUTION": "true",
+      "TEST_WORKLOAD": "big5",
+      "ADDITIONAL_CONFIG": "search.concurrent_segment_search.partition_strategy:force",
+      "WORKLOAD_PARAMS": "{\"snapshot_repo_name\":\"benchmark-workloads-repo-3x\",\"snapshot_bucket_name\":\"benchmark-workload-snapshots\",\"snapshot_region\":\"us-east-1\",\"snapshot_base_path\":\"10.3.2\",\"snapshot_name\":\"big5_1_shard_text_field\"}",
+      "CAPTURE_NODE_STAT": "true",
+      "TEST_PROCEDURE": "intra-segment"
+    },
+    "cluster_configuration": {
+      "size": "Single-Node",
+      "data_instance_config": "4vCPU, 32G Mem, 16G Heap"
+    },
+    "baseline_cluster_config": "x64-r5.xlarge-1-shard-0-replica-snapshot-baseline"
   }
 }