After 82b0945ce2
and ec314f61e4,
the hv_fcopy dameon was renamed to hv_uio_fcopy, breaking
hyperv-daemons.
I added a check to change the binary name based on the kernel
version and to only run the service if the FCOPY_UIO path exists.
The path doesn't exist on my machine (not sure why), so I'm not
actually able to test the daemon but I think this is better than
hyperv being broken for now.