ch: use CURLOPT_UPLOAD instead of CURLOPT_PUT

ch: use CURLOPT_UPLOAD instead of CURLOPT_PUT

The CURLOPT_PUT constant causes a deprecation warning when compiling on
Alpine Edge.  The docs indicate it is deprecated since 7.2.1

  https://curl.se/libcurl/c/CURLOPT_PUT.html

Since 7.87 the deprecation is now exposed at build time via a compiler
warning.

We already use CURLOPT_UPLOAD in the ESX driver, so this brings the CH
driver into line.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>