hyper-v: Include in 12.1 codebase

This update contains the userland part of the Hyper-V virtualization components that we missed
shipping with 12.1 originally.

Fixed bugs
bnc#685189
xen 4.1. script vif-route-ifup uses ${vif} from vif-common.sh which changed to ${dev} in xen c/s 22910
Selected Binaries
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