add rhel specific config to spec
add rhel specific config to spec

jdost321/hdfs-xrootd-fallback-proj,jdost321/hdfs-xrootd-fallback-proj,jdost321/hdfs-xrootd-fallback-proj,jdost321/hdfs-xrootd-fallback-proj,jdost321/hdfs-xrootd-fallback-proj