Pass in env vars in FlyteRemote register_script (#2120)

Signed-off-by: Karl Nordstrom <[email protected]>

flytekit/remote/remote.py

@@ -894,6 +894,7 @@ def register_script(
         options: typing.Optional[Options] = None,
         source_path: typing.Optional[str] = None,
         module_name: typing.Optional[str] = None,
+        envs: typing.Optional[typing.Dict[str, str]] = None,
     ) -> typing.Union[FlyteWorkflow, FlyteTask]:
         """
         Use this method to register a workflow via script mode.
@@ -908,6 +909,7 @@ def register_script(
         :param options: Additional execution options that can be configured for the default launchplan
         :param source_path: The root of the project path
         :param module_name: the name of the module
+        :param envs: Environment variables to be passed to the serialization
         :return:
         """
         if image_config is None:
@@ -928,6 +930,7 @@ def register_script(
             domain=domain,
             image_config=image_config,
             git_repo=_get_git_repo_url(source_path),
+            env=envs,
             fast_serialization_settings=FastSerializationSettings(
                 enabled=True,
                 destination_dir=destination_dir,