Use precompiled protoc
Use precompiled protoc

Pull in protoc the right way, so that we can use a released binary
instead of compiling protoc ourselves on every branch switch.

Signed-off-by: Roman Mohr <6da0130c5aeef94e5bbaabadbf8017270be25c64@redhat.com>

kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt,kubevirt/kubevirt