Fix: API - LrHandleOption enum - LRO_ONETIMEFLAG (RhBug:1761779)
Fix: API - LrHandleOption enum - LRO_ONETIMEFLAG (RhBug:1761779)

The commit "Add support for one-time URL flags" introduces
the LRO_ONETIMEFLAG option. The new option was inserted into
LrHandleOption enum -> all options behind it changed its value
(increased by one). API was changed.
This patch moves LRO_ONETIMEFLAG option behind existing ones. So,
the original values of options are restored.

rpm-software-management/librepo,Tojaj/librepo,Tojaj/librepo,rpm-software-management/librepo,Tojaj/librepo,rpm-software-management/librepo