reference catalog for gsheets validation

superset/databases/schemas.py

@@ -315,6 +315,13 @@ class Meta:  # pylint: disable=too-few-public-methods
         values=fields.Raw(allow_none=True),
         description="DB-specific parameters for configuration",
     )
+    catalog = fields.List(
+        fields.Dict(
+            keys=fields.String(),
+            values=fields.Raw(allow_none=True),
+            description="Gsheets specific column for managing label to sheet urls",
+        )
+    )
     database_name = fields.String(
         description=database_name_description,
         allow_none=True,

superset/db_engine_specs/gsheets.py

@@ -215,16 +215,22 @@ def validate_parameters(
         properties: GSheetsPropertiesType,
     ) -> List[SupersetError]:
         errors: List[SupersetError] = []
+
+        # backwards compatible just incase people are send data
+        # via parameters for validation
         parameters = properties.get("parameters", {})
+        if parameters:
+            table_catalog = parameters.get("catalog", {})
+        else:
+            table_catalog = properties.get("catalog", {})
+
         encrypted_credentials = parameters.get("service_account_info") or "{}"
 
         # On create the encrypted credentials are a string,
         # at all other times they are a dict
         if isinstance(encrypted_credentials, str):
             encrypted_credentials = json.loads(encrypted_credentials)
 
-        table_catalog = parameters.get("catalog", {})
-
         if not table_catalog:
             # Allowing users to submit empty catalogs
             errors.append(