Build: update makerpms.sh to use same paths as rpmbuild
    
    This allows us to simply use makerpms.sh to configure the build tree,
    install RPMs to configure system for the first time and then use make install
    for rapid devel/test cycles.
    
    Configuration parameteres were taken from rpm-4.13.0-0.rc1.27.fc24.x86_64.
    
    https://fedorahosted.org/freeipa/ticket/6418
    
    Reviewed-By: Lukas Slebodnik <lslebodn@redhat.com>
    Reviewed-By: Christian Heimes <cheimes@redhat.com>