Skip debug message in lxcContainerSetID if no map is set.
Skip debug message in lxcContainerSetID if no map is set.

The lxcContainerSetID() method prints a misleading log
message about setting the uid/gid when no ID map is
present in the XML config. Skip the debug message in
this case.

Signed-off-by: Chen Hanxiao <818f8a165c25fa146ecad28e2ef3e3fb996fa364@cn.fujitsu.com>

cbosdo/libvirt,nertpinx/libvirt,rlaager/libvirt,jfehlig/libvirt,VenkatDatta/libvirt,elmarco/libvirt,nertpinx/libvirt,crobinso/libvirt,rlaager/libvirt,elmarco/libvirt,rlaager/libvirt,datto/libvirt,olafhering/libvirt,zhlcindy/libvirt-1.1.4-maintain,olafhering/libvirt,eskultety/libvirt,rlaager/libvirt,zippy2/libvirt,datto/libvirt,cbosdo/libvirt,libvirt/libvirt,agx/libvirt,olafhering/libvirt,cbosdo/libvirt,shugaoye/libvirt,rlaager/libvirt,fabianfreyer/libvirt,taget/libvirt,elmarco/libvirt,agx/libvirt,taget/libvirt,shugaoye/libvirt,VenkatDatta/libvirt,shugaoye/libvirt,jardasgit/libvirt,andreabolognani/libvirt,nertpinx/libvirt,fabianfreyer/libvirt,crobinso/libvirt,agx/libvirt,andreabolognani/libvirt,crobinso/libvirt,libvirt/libvirt,zhlcindy/libvirt-1.1.4-maintain,elmarco/libvirt,libvirt/libvirt,eskultety/libvirt,olafhering/libvirt,elmarco/libvirt,eskultety/libvirt,zhlcindy/libvirt-1.1.4-maintain,nertpinx/libvirt,zippy2/libvirt,VenkatDatta/libvirt,fabianfreyer/libvirt,fabianfreyer/libvirt,taget/libvirt,zippy2/libvirt,jfehlig/libvirt,andreabolognani/libvirt,crobinso/libvirt,datto/libvirt,zhlcindy/libvirt-1.1.4-maintain,VenkatDatta/libvirt,andreabolognani/libvirt,jfehlig/libvirt,taget/libvirt,jfehlig/libvirt,agx/libvirt,jardasgit/libvirt,cbosdo/libvirt,shugaoye/libvirt,zippy2/libvirt,jardasgit/libvirt,jardasgit/libvirt,agx/libvirt,datto/libvirt,VenkatDatta/libvirt,eskultety/libvirt,zhlcindy/libvirt-1.1.4-maintain,cbosdo/libvirt,eskultety/libvirt,jardasgit/libvirt,fabianfreyer/libvirt,shugaoye/libvirt,datto/libvirt,libvirt/libvirt,andreabolognani/libvirt,taget/libvirt,nertpinx/libvirt