Fix client/external so that Project API get_client works

That is, set _project_id.

Author: aversey

python/hopsworks/client/external.py

@@ -41,6 +41,11 @@ def __init__(
         self._port = port
         self._base_url = "https://" + self._host + ":" + str(self._port)
         self._project_name = project
+        if project is not None:
+            project_info = self._get_project_info(project)
+            self._project_id = str(project_info["projectId"])
+        else:
+            self._project_id = None
 
         if api_key_value is not None:
             api_key = api_key_value