Change virCgroupGetAppRoot stub on non-Linux to avoid unused param warning
Change virCgroupGetAppRoot stub on non-Linux to avoid unused param warning

Fully stub out the virCgroupGetAppRoot method as done with other
methods in the file, rather than just the body. This lets us
annotate the unused parameter to avoid a warning

shugaoye/libvirt,cbosdo/libvirt,fabianfreyer/libvirt,nertpinx/libvirt,taget/libvirt,siboulet/libvirt-openvz,jardasgit/libvirt,jardasgit/libvirt,bjzhang/libvirt,jfehlig/libvirt,zhlcindy/libvirt-1.1.4-maintain,andreabolognani/libvirt,taget/libvirt,fabianfreyer/libvirt,emaste/libvirt,rlaager/libvirt,agx/libvirt,taget/libvirt,elmarco/libvirt,jfehlig/libvirt,emaste/libvirt,shugaoye/libvirt,eskultety/libvirt,cbosdo/libvirt,libvirt/libvirt,nertpinx/libvirt,rlaager/libvirt,siboulet/libvirt-openvz,emaste/libvirt,trainstack/libvirt,siboulet/libvirt-openvz,rlaager/libvirt,elmarco/libvirt,datto/libvirt,iam-TJ/libvirt,zippy2/libvirt,libvirt/libvirt,eskultety/libvirt,libvirt/libvirt,elmarco/libvirt,VenkatDatta/libvirt,datto/libvirt,iam-TJ/libvirt,trainstack/libvirt,siboulet/libvirt-openvz,iam-TJ/libvirt,bjzhang/libvirt,jardasgit/libvirt,elmarco/libvirt,nertpinx/libvirt,zippy2/libvirt,emaste/libvirt,jfehlig/libvirt,libvirt/libvirt,nertpinx/libvirt,andreabolognani/libvirt,zippy2/libvirt,fabianfreyer/libvirt,fabianfreyer/libvirt,rlaager/libvirt,crobinso/libvirt,shugaoye/libvirt,datto/libvirt,olafhering/libvirt,trainstack/libvirt,taget/libvirt,andreabolognani/libvirt,olafhering/libvirt,agx/libvirt,bjzhang/libvirt,olafhering/libvirt,VenkatDatta/libvirt,iam-TJ/libvirt,andreabolognani/libvirt,zhlcindy/libvirt-1.1.4-maintain,iam-TJ/libvirt,crobinso/libvirt,eskultety/libvirt,eskultety/libvirt,bjzhang/libvirt,iam-TJ/libvirt,rlaager/libvirt,shugaoye/libvirt,zhlcindy/libvirt-1.1.4-maintain,siboulet/libvirt-openvz,andreabolognani/libvirt,cbosdo/libvirt,crobinso/libvirt,VenkatDatta/libvirt,bjzhang/libvirt,eskultety/libvirt,trainstack/libvirt,datto/libvirt,jfehlig/libvirt,trainstack/libvirt,emaste/libvirt,trainstack/libvirt,cbosdo/libvirt,zippy2/libvirt,olafhering/libvirt,fabianfreyer/libvirt,taget/libvirt,crobinso/libvirt,cbosdo/libvirt,datto/libvirt,VenkatDatta/libvirt,zhlcindy/libvirt-1.1.4-maintain,zhlcindy/libvirt-1.1.4-maintain,elmarco/libvirt,VenkatDatta/libvirt,trainstack/libvirt,emaste/libvirt,agx/libvirt,jardasgit/libvirt,iam-TJ/libvirt,shugaoye/libvirt,agx/libvirt,agx/libvirt,nertpinx/libvirt,jardasgit/libvirt,emaste/libvirt