Enable serial console for fedora
Enable serial console for fedora

Change-Id: Ic3695f643f3d00457fd97d18863793d60d3f211d

JioCloud/diskimage-builder,citrix-openstack-build/diskimage-builder,NaohiroTamura/diskimage-builder,rdo-management/diskimage-builder,switch-ch/diskimage-builder,openstack/diskimage-builder,varunarya10/diskimage-builder,citrix-openstack-build/diskimage-builder,switch-ch/diskimage-builder,eantyshev/diskimage-builder,CSC-IT-Center-for-Science/diskimage-builder,openstack/diskimage-builder,takahashinobuyuki/diskimage-builder,zioproto/diskimage-builder,varunarya10/diskimage-builder,zioproto/diskimage-builder,JioCloud/diskimage-builder,CSC-IT-Center-for-Science/diskimage-builder,eantyshev/diskimage-builder,NaohiroTamura/diskimage-builder,rdo-management/diskimage-builder,takahashinobuyuki/diskimage-builder