chore(pylint): Reenable raise-missing-from check (#16266)

Co-authored-by: John Bodley <john.bodley@airbnb.com>

superset/db_engine_specs/bigquery.py

@@ -327,12 +327,12 @@ class BigQueryEngineSpec(BaseEngineSpec):
             # pylint: disable=import-outside-toplevel
             import pandas_gbq
             from google.oauth2 import service_account
-        except ImportError:
+        except ImportError as ex:
             raise Exception(
                 "Could not import libraries `pandas_gbq` or `google.oauth2`, which are "
                 "required to be installed in your environment in order "
                 "to upload data to BigQuery"
-            )
+            ) from ex
 
         if not table.schema:
             raise Exception("The table schema must be defined")

superset/db_engine_specs/druid.py

@@ -79,8 +79,8 @@ class DruidEngineSpec(BaseEngineSpec):  # pylint: disable=abstract-method
         """
         try:
             extra = json.loads(database.extra or "{}")
-        except json.JSONDecodeError:
-            raise SupersetException("Unable to parse database extras")
+        except json.JSONDecodeError as ex:
+            raise SupersetException("Unable to parse database extras") from ex
 
         if database.server_cert:
             engine_params = extra.get("engine_params", {})

superset/db_engine_specs/postgres.py

@@ -262,8 +262,8 @@ class PostgresEngineSpec(PostgresBaseEngineSpec, BasicParametersMixin):
         """
         try:
             extra = json.loads(database.extra or "{}")
-        except json.JSONDecodeError:
-            raise SupersetException("Unable to parse database extras")
+        except json.JSONDecodeError as ex:
+            raise SupersetException("Unable to parse database extras") from ex
 
         if database.server_cert:
             engine_params = extra.get("engine_params", {})