[Test automation] Fix pytest collection errors and schedule daily CI/CD workflow run

.github/workflows/gha_workflow_llama_stack_tests.yml

@@ -11,6 +11,10 @@ on:
   #    - 'llama_stack/**/*.py'
   #    - 'tests/**/*.py'
 
+  # Schedule cron job at 2:30 am EST every day of the week.
+  # Will run a manual workflow off of 'main' branch.
+  schedule:
+    - cron: '30 7 * * *'
   workflow_dispatch:
     inputs:
       runner:
@@ -142,7 +146,7 @@ jobs:
         id: checkout_repo
         uses: actions/checkout@v4
         with:
-          ref: ${{ inputs.branch }}
+          ref: ${{ inputs.checkout_reference }}
 
       - name: "[DEBUG] Content of the repository after checkout"
         id: debug_content_after_checkout
@@ -206,11 +210,6 @@ jobs:
           sudo apt update -y
           sudo apt install -y python3 python3-pip npm wget
 
-      - name: "Installing packages with 'curl'"
-        id: install_curl
-        run: |
-          curl -fsSL https://ollama.com/install.sh | sh
-
       - name: "Installing packages with 'wget'"
         id: install_wget
         run: |
@@ -310,7 +309,7 @@ jobs:
       - name: "PR - Upload Test Summary"
         id: pr_test_summary_upload
         if: github.event_name == 'pull_request_target'
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: test-summary
           path: test-summary.md

llama_stack/providers/tests/agents/test_persistence.py

@@ -9,7 +9,9 @@
 from llama_stack.apis.agents import AgentConfig, Turn
 from llama_stack.apis.inference import SamplingParams, UserMessage
 from llama_stack.providers.datatypes import Api
-from llama_stack.providers.utils.kvstore import kvstore_impl, SqliteKVStoreConfig
+from llama_stack.providers.utils.kvstore import kvstore_impl
+from llama_stack.providers.utils.kvstore.config import SqliteKVStoreConfig
+
 from .fixtures import pick_inference_model
 
 from .utils import create_agent_session

llama_stack/providers/tests/inference/test_embeddings.py

@@ -6,7 +6,8 @@
 
 import pytest
 
-from llama_stack.apis.inference import EmbeddingsResponse, ModelType
+from llama_stack.apis.inference import EmbeddingsResponse
+from llama_stack.apis.models import ModelType
 
 # How to run this test:
 # pytest -v -s llama_stack/providers/tests/inference/test_embeddings.py

llama_stack/providers/tests/post_training/test_post_training.py

@@ -5,7 +5,7 @@
 # the root directory of this source tree.
 import pytest
 
-from llama_stack.apis.common.type_system import JobStatus
+from llama_stack.apis.common.job_types import JobStatus
 from llama_stack.apis.post_training import (
     Checkpoint,
     DataConfig,