Run HTTP related automated tests with multiple versions of cURL

[jorbin]

See: Bugs over the years that have affected only certain versions of cURL.

[jorbin]

Thinking a bit on the matrix for this, I'm not sure that every version of cURL and every version of PHP are feasible without making the test matrix unwieldy. I think an initial goal might be:

cURL versions with ​specific callouts inside requests
cURL versions where major defaults changed such as preferring http2
The latest in each major release (7.x.y, 8.x.y)
The versions that are the default for the LTS version of major linux distributions

Some further research is necessary to identify exactly how many and which versions this will be.

[desrosj]

No movement during the cycle. Going to punt to 6.7.

[chaion07]

Thanks @jorbin for reporting this. As we move closer to the RC1 for 6.7 in a matter of days and with no progress in this cycle, we are updating the milestone based on the feedback received from a recent bug-scrub session.

Cheers!

[desrosj]

Because this has been punted a few times, I'm going to move to Future Release. When there's a patch, it can be moved back to a numbered milestone.