[network] tests openssl/gnutls backend for curl

[nplanel]

What does this PR do?

Adding more https tests by testing openssl/gnutls against curl and wget

Describe how to test/QA your changes

Reviewer's Checklist

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[brycekahle]

Let's add something so that curl is only downloaded and built once in local dev environments. Maybe check the packages curl has been built with before attempting.