feat: update values.yaml and refactor cleanup paths

- Changed project name in values.yaml from "sientia-dataops-model-manager" to "sientia-model-manager".
- Added new environment variables for GitHub repository and branch configuration.
- Refactored cleanup paths to use a centralized REPORTS_TEMP_DIR constant for consistency.
- Updated runtime configurations and adjusted volume mounts for better resource management.
- Enabled SSH access for the model manager and disabled Grafana dashboard creation.
- Updated tests to reflect changes in directory paths and environment variable usage.

tests/workflows/test_cleanup_files.py

@@ -10,6 +10,7 @@ import pytest
 @patch('model_manager.workflows.cleanup_files.workflow')
 async def test_cleanup_files_workflow(mock_workflow_module):
     """Test the CleanupFiles workflow."""
+    from model_manager.runtime_paths import REPORTS_TEMP_DIR
     from model_manager.workflows.cleanup_files import CleanupFiles
 
     # Mock execute_activity_method
@@ -26,7 +27,7 @@ async def test_cleanup_files_workflow(mock_workflow_module):
 
     # Check cleanup_temp_directories call
     local_call_args = calls[0][0][1]
-    assert local_call_args['temp_path'] == 'model_manager/reports/temp'
+    assert local_call_args['temp_path'] == REPORTS_TEMP_DIR
     assert local_call_args['metadata'] == {
         'pod_id': 'temporal-pod',
         'workflow_name': 'cleanup_files',