Bugfixes:
* the remote_src param was not being converted to a boolean correctly,
resulting in it never being used by the module as the default behavior
was remote_src=True (issue #5581)
* the remote_src param was not listed in the generic file params, leading
to a failure when the above bug regarding remote_src was fixed
* the delimiter should always end with a newline to ensure that the file
fragments do not run together on one line
Fixes#5581
