- Change manifests for Prometheus installation

- Change instructions for deploying Prometheus stack and Pushgateway
- Additional grouping to pushgateway to avoid overwriting of metrics in different pods / processes
- Bugfix to ensure good retrieval of css en js files in eveai_app

config/config.py

@@ -439,6 +439,10 @@ class StagingConfig(Config):
     MINIO_SECRET_KEY = environ.get('MINIO_SECRET_KEY')
     MINIO_USE_HTTPS = True
 
+    # Push gateway grouping elements
+    pod_name = os.getenv('POD_NAME')
+    pod_namespace = os.getenv('POD_NAMESPACE')
+
 
 class ProdConfig(Config):
     DEVELOPMENT = False