[#254] Added change for EC policy

Signed-off-by: Dmitriy Zayakin <d.zayakin@yadro.com>

src/frostfs_testlib/storage/dataclasses/storage_object_info.py

@@ -70,6 +70,8 @@ class NodeNetInfo:
     epoch_duration: str = None
     inner_ring_candidate_fee: str = None
     maximum_object_size: str = None
+    maximum_count_of_data_shards: str = None
+    maximum_count_of_parity_shards: str = None
     withdrawal_fee: str = None
     homomorphic_hashing_disabled: str = None
     maintenance_mode_allowed: str = None