add cron lockfile to prevent multiple healers from starting if one takes a long time
add cron lockfile to prevent multiple healers from starting if one takes a long time

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