retry middleware add EOFError

[baby5]

[Failure instance: Traceback: <class 'EOFError'>: Compressed file ended before the end-of-stream marker was reached

i got this log from scrapy, i deal with it by adding EOFError to retry middleware EXCEPTIONS_TO_RETRY
manually

in deep, provide a setting for user to custom retry error maybe better

[Gallaecio]

The list became configurable in 2.10.

However, I think it would make sense to add EOFError to the list by default, mentioning it could happen due to partial compressed responses.

[Gallaecio]

Let’s keep this open to add EOFError to the list by default.