Add gpt4_1ModelCapacity parameter

Author: Roopan-Microsoft

infra/main.parameters.json

@@ -23,6 +23,9 @@
     "gptModelCapacity": {
       "value": "${AZURE_ENV_MODEL_CAPACITY}"
     },
+    "gpt4_1ModelCapacity": {
+      "value": "${AZURE_ENV_MODEL_4_1_CAPACITY}"
+    },
     "backendContainerImageTag": {
       "value": "${AZURE_ENV_IMAGE_TAG=latest_v3}"
     },
@@ -42,4 +45,4 @@
       "value": "${AZURE_EXISTING_AI_PROJECT_RESOURCE_ID}"
     }
   }
-}
+}