ENH: allow HTTP GDAL datasets

Summary

Allow IOGDAL to open HTTP and HTTPS datasets.

Rationale

These were disabled in 6b1a6270 as a work-around for a pre-GDAL 1.11 bug. We no longer support GDAL 1, let's remove this check and see what happens.

Copyright

The copyright owner is Laurențiu Nicola (CS ROMANIA) and has signed the ORFEO ToolBox Contributor License Agreement.

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Check before merging:

• All discussions are resolved
• At least 2 votes from core developers, no vote.
• The feature branch is (reasonably) up-to-date with the base branch
• Dashboard is green
• Copyright owner has signed the ORFEO ToolBox Contributor License Agreement
• Optionally, run git diff develop... -U0 --no-color | clang-format-diff.py -p1 -i on latest changes and commit