virtc: Support glog and urfave/cli at the same time
virtc: Support glog and urfave/cli at the same time

It's not pretty, but until urfave/cli supports glog properly, we need to
explicitly parse the glog flags.

Signed-off-by: Samuel Ortiz <0ba86cb3f08bbb861958e54bd3438887adb4263c@linux.intel.com>

wcwxyz/virtcontainers,containers/virtcontainers,wcwxyz/virtcontainers,wcwxyz/virtcontainers,containers/virtcontainers