Move shared code to testlib

Signed-off-by: Andrey Berezin <a.berezin@yadro.com>

src/frostfs_testlib/storage/constants.py

@@ -0,0 +1,22 @@
+class ConfigAttributes:
+    SERVICE_NAME = "systemd_service_name"
+    WALLET_PASSWORD = "wallet_password"
+    WALLET_PATH = "wallet_path"
+    WALLET_CONFIG = "wallet_config"
+    CONFIG_PATH = "config_path"
+    LOCAL_WALLET_PATH = "local_wallet_path"
+    LOCAL_WALLET_CONFIG = "local_config_path"
+    ENDPOINT_DATA_0 = "endpoint_data0"
+    ENDPOINT_DATA_1 = "endpoint_data1"
+    ENDPOINT_INTERNAL = "endpoint_internal0"
+    CONTROL_ENDPOINT = "control_endpoint"
+    UN_LOCODE = "un_locode"
+
+
+class _FrostfsServicesNames:
+    STORAGE = "s"
+    S3_GATE = "s3-gate"
+    HTTP_GATE = "http-gate"
+    MORPH_CHAIN = "morph-chain"
+    INNER_RING = "ir"
+    MAIN_CHAIN = "main-chain"