Why does Red Hat OpenShift Container Platform 3.11 node logs error "systemd Failed to set up mount unit: Invalid argument" frequently?

Issue

• In Red Hat OpenShift Container Platform 3.11 node, the following line is seen logged frequently.

systemd Failed to set up mount unit: Invalid argument

• It's frequency is so high that the /var/log filesystem fills up.

$ egrep -v "systemd: Failed to set up mount unit: Invalid argument" var/log/messages | wc -l
105460

• Installed version of systemd is as follows.

$ grep systemd installed-rpms 
oci-systemd-hook-0.2.0-1.git05e6923.el7_6.x86_64
systemd-219-67.el7_7.2.x86_64                   
systemd-libs-219-67.el7_7.2.x86_64              
systemd-sysv-219-67.el7_7.2.x86_64