Rename rate_type -> profile in builtin scenarios

Signed-off-by: Samuel Monson <[email protected]>

Author: sjmonson

src/guidellm/benchmark/scenarios/chat.json

@@ -1,13 +1,4 @@
 {
-    "rate_type": "sweep",
-    "data": {
-        "prompt_tokens": 512,
-        "prompt_tokens_stdev": 128,
-        "prompt_tokens_min": 1,
-        "prompt_tokens_max": 1024,
-        "output_tokens": 256,
-        "output_tokens_stdev": 64,
-        "output_tokens_min": 1,
-        "output_tokens_max": 1024
-    }
+    "profile": "sweep",
+    "data": "prompt_tokens=512,prompt_tokens_stdev=128,prompt_tokens_min=1,prompt_tokens_max=1024,output_tokens=256,output_tokens_stdev=64,output_tokens_min=1,output_tokens_max=1024"
 }

src/guidellm/benchmark/scenarios/rag.json

@@ -1,13 +1,4 @@
 {
-    "rate_type": "sweep",
-    "data": {
-        "prompt_tokens": 4096,
-        "prompt_tokens_stdev": 512,
-        "prompt_tokens_min": 2048,
-        "prompt_tokens_max": 6144,
-        "output_tokens": 512,
-        "output_tokens_stdev": 128,
-        "output_tokens_min": 1,
-        "output_tokens_max": 1024
-    }
+    "profile": "sweep",
+    "data": "prompt_tokens=4096,prompt_tokens_stdev=512,prompt_tokens_min=2048,prompt_tokens_max=6144,output_tokens=512,output_tokens_stdev=128,output_tokens_min=1,output_tokens_max=1024"
 }