Fixing Reboot system call flags
Fixing Reboot system call flags

Signed-off-by: Justin Terry (VM) <f0c38945ef01caad6a7c3d4b90a29703264b34a4@microsoft.com>

rn/opengcs,jterry75/opengcs,Microsoft/hcsshim,jterry75/opengcs,jterry75/opengcs,rn/opengcs