LVM resource fails probe operation in Pacemaker cluster with many LUNs

Issue

• ocf:heartbeat:LVM resource times out on its probe operation as soon as it is created. Then it times out on its stop, and the node is rebooted.
• The stderr from the LVM monitor operation contains many errors like the following. (errno 24 translates to "too many open files.")

2019-09-05T11:08:53.530219-04:00 node-1 lrmd[41824]:  notice: lvm_rsc_monitor_0:29333:stderr [   Device open /dev/mapper/mpathamd 253:1023 failed errno 24 ]
2019-09-05T11:08:53.530357-04:00 node-1 lrmd[41824]:  notice: lvm_rsc_monitor_0:29333:stderr [   Device open /dev/mapper/mpathamd 253:1023 failed errno 24 ]