Update sysconfig file name in SysV init scripts

SysV init scripts of root servers was wrongly attempting to read
configurations from /etc/sysconfig/usr/sbin/<server> file. As the
'$prog' variable is set to point to /usr/sbin/<server>.

  [ -e /etc/sysconfig/$prog ] && . /etc/sysconfig/$prog

Fixed it by making it point to => /etc/sysconfig/${prog##[a-z/.]*/}.

Thank you Matthias(github.com/matthias2) for reporting this issue
and creating a patch.