add embedding model by default

llama_stack/templates/cerebras/run.yaml

@@ -15,6 +15,9 @@ providers:
     config:
       base_url: https://api.cerebras.ai
       api_key: ${env.CEREBRAS_API_KEY}
+  - provider_id: sentence-transformers
+    provider_type: inline::sentence-transformers
+    config: {}
   safety:
   - provider_id: llama-guard
     provider_type: inline::llama-guard
@@ -51,10 +54,18 @@ models:
   model_id: meta-llama/Llama-3.1-8B-Instruct
   provider_id: null
   provider_model_id: llama3.1-8b
+  model_type: llm
 - metadata: {}
   model_id: meta-llama/Llama-3.1-70B-Instruct
   provider_id: null
   provider_model_id: llama3.1-70b
+  model_type: llm
+- metadata:
+    embedding_dim: 384
+  model_id: all-MiniLM-L6-v2
+  provider_id: sentence-transformers
+  provider_model_id: null
+  model_type: embedding
 shields:
 - params: null
   shield_id: meta-llama/Llama-Guard-3-8B