renamed check_mapr_failed_disks.pl -> check_mapr_nodes_failed_disks.pl
tweaked output as this may not strictly be MapR-FS disks that have failed
renamed check_mapr_nodes_failed_disks.pl -> check_mapr_node_failed_disks.pl
Merge branch 'master' of https://github.com/harisekhon/nagios-plugins
updated lib
added check_mapr_node_mapr-fs_disks.pl
updated lib