Merge topic 'curl-tls-version'

434fe8a34b file(DOWNLOAD|UPLOAD): Add CMAKE_TLS_VERSION environment variable
fb9a6cf909 file(DOWNLOAD|UPLOAD): Add CMAKE_TLS_VERSION variable
8e6776b9f3 file(DOWNLOAD|UPLOAD): Add TLS_VERSION option for https connections

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !9290