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.

model_manager/workflows/cleanup_files.py

@@ -13,6 +13,7 @@ with workflow.unsafe.imports_passed_through():
     from typing import Any
 
     from model_manager.activities.activities import Activities
+    from model_manager.runtime_paths import REPORTS_TEMP_DIR
     from model_manager.workflows.train_model import no_retry_policy
 
     TIMEOUT_CLEANUP_LOCAL = int(os.getenv('TIMEOUT_CLEANUP_LOCAL', '120'))
@@ -39,8 +40,7 @@ class CleanupFiles:
         in sequence. No exception handling is needed as activities handle their
         own errors and notifications.
         """
-        # Default temp path for local cleanup
-        temp_path = 'model_manager/reports/temp'
+        temp_path = REPORTS_TEMP_DIR
 
         # Metadata for tracking
         metadata = {