Sort rhel/bin/map-packages
Sort rhel/bin/map-packages

Unlike the redhat-common and opensuse map-packages maps, the RHEL one
appears to be unsorted. Fix that.

Change-Id: I75c5d2694525731660c2a3b5b58ee696c61923ba

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