feat: add integration tests for post_training

set inline::huggingface as the default post_training provider for the ollama distribution and add integration tests for post_training

Signed-off-by: Charlie Doern <cdoern@redhat.com>

llama_stack/templates/ollama/run-with-safety.yaml

@@ -5,6 +5,7 @@ apis:
 - datasetio
 - eval
 - inference
+- post_training
 - safety
 - scoring
 - telemetry
@@ -80,6 +81,13 @@ providers:
     provider_type: inline::braintrust
     config:
       openai_api_key: ${env.OPENAI_API_KEY:}
+  post_training:
+  - provider_id: huggingface
+    provider_type: inline::huggingface
+    config:
+      checkpoint_format: huggingface
+      distributed_backend: null
+      device: cpu
   tool_runtime:
   - provider_id: brave-search
     provider_type: remote::brave-search