Refactor S3 configuration in Loki values.yaml to update access key and secret key references, and add region specification

apps/logging/loki/values.yaml

@@ -47,12 +47,12 @@ loki:
         ruler: loki-logs
         admin: loki-logs
       s3:
-        s3forcepathstyle: true
-        bucketnames: ${BUCKET_NAME}
-        endpoint: ${BUCKET_HOST}:${BUCKET_PORT}
-        access_key_id: "${AWS_ACCESS_KEY_ID}"
-        secret_access_key: "${AWS_SECRET_ACCESS_KEY}"
+        endpoint: rook-ceph-rgw-ceph-objectstore.rook-ceph.svc:80
+        region: us-east-1
         insecure: true
+        s3ForcePathStyle: true
+        accessKeyId: ${AWS_ACCESS_KEY_ID}
+        secretAccessKey: ${AWS_SECRET_ACCESS_KEY}
     
     # Limits and retention
     limits_config: