feat(ingest): support self-signed certs in Tableau (#6172)

metadata-ingestion/src/datahub/ingestion/source/tableau.py

@@ -144,6 +144,11 @@ class TableauConnectionConfig(ConfigModel):
         description="Tableau Site. Always required for Tableau Online. Use emptystring to connect with Default site on Tableau Server.",
     )
 
+    ssl_verify: Union[bool, str] = Field(
+        default=True,
+        description="Whether to verify SSL certificates. If using self-signed certificates, set to false or provide the path to the .pem certificate bundle.",
+    )
+
     @validator("connect_uri")
     def remove_trailing_slash(cls, v):
         return config_clean.remove_trailing_slashes(v)
@@ -168,6 +173,11 @@ def make_tableau_client(self) -> Server:
 
         try:
             server = Server(self.connect_uri, use_server_version=True)
+
+            # From https://stackoverflow.com/a/50159273/5004662.
+            server._session.verify = self.ssl_verify
+            server._session.trust_env = False
+
             server.auth.sign_in(authentication)
             return server
         except ServerResponseError as e: