Fix shell socket stuck issue in delopy_cert function. Refer to issue #51

[Adel-Magebinary]

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[GUI]

Thanks for the contribution! I made one small tweak to cleanup some duplicate curl arguments than I think might have been accidentally added, but let me know if I missed anything with that change. Otherwise, this has been released in v0.10.5.

I'm a little puzzled as to why this was an issue in your environment (I wasn't entirely clear on how to reproduce in based on #51), but in any case, this seems like a cleaner approach to sending along the file contents with curl anyway, so I like it! I've also verified that the @ syntax for attaching files directly should have been supported since the --data-urlencode option was introduced in curl (v7.18.0), so I don't think this should result in any compatibility differences.