rpm: automatically load the fuse module on EL5
    
    The fuse module needs to be loaded before /dev/fuse can be used. On
    RHEL6 and Fedora the module is loaded on demand. RHEL5 needs to load the
    module manually.
    
    This change add a script under /etc/sysconfig/modules/ that loads the
    fuse module on boot and packages it in the EL5 version of
    glusterfs-fuse.
    
    One of the features of GlusterFS is to not depend on additional fuse
    userspace. The conditional requires on /usr/bin/fusermount is not
    needed, this command is never called in the current version (even though
    is it referenced in the sources).
    
    Upstream-BUG: 947830