Statically compile the sriovdp binary

[mgfritch]

The sriovdp binary is dynamically linked by default when built against the upstream v3.8.0 release, where prior versions of the upstream binary were statically linked.

The downstream rancher binary is built against Alpine Linux and then copied into a target BCI container image that is not able to provide the needed musl libc library.

[mgfritch]

This causes the container entrypoint script to fail at startup:

# kubectl logs sriov-device-plugin-sdtqh  
/entrypoint.sh: line 80: /usr/bin//sriovdp: No such file or directory

---

# file /usr/bin/sriovdp
/usr/bin/sriovdp: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), dynamically linked, interpreter /lib/ld-musl-x86_64.so.1, Go BuildID=If7cxLxyNL245aDKOfe4/c3PUZ31o1WyWUDcS_lEt/rUcVMwx8G7tqGTBjGvhO/Yjmiks0NUanY9Jv4P3Qs, with debug_info, not stripped

# ldd /usr/bin/sriovdp
        linux-vdso.so.1 (0x00007ff4a10c0000)
        libc.musl-x86_64.so.1 => not found