OpenShift nodes hang on reboot due to NFS lazy umounts called by oci-umount, container tool package

Issue

• Open Shift nodes hang on reboot due to lazy umounts triggered by oci-umount

crash> ps -m | grep UN 
[0 00:10:44.049] [UN]  PID: 2136   TASK: ffff99f3fef64f10  CPU: 17  COMMAND: "poweroff"  < 
[0 00:10:55.262] [UN]  PID: 31589  TASK: ffff99ff78ba0000  CPU: 7   COMMAND: "java"
[0 00:10:55.345] [UN]  PID: 62574  TASK: ffff99f44baa0000  CPU: 17  COMMAND: "java"
[0 00:11:02.028] [UN]  PID: 63909  TASK: ffff99ed7cffaf70  CPU: 10  COMMAND: "prometheus"

The shutdown => poweroff task also seen waiting on sync inodes of nfs superblock
crash> ps -p 2136 
PID: 0      TASK: ffffffff93016480  CPU: 0   COMMAND: "swapper/0"
 PID: 1      TASK: ffff99e9adb28000  CPU: 2   COMMAND: "shutdown"
  PID: 2136   TASK: ffff99f3fef64f10  CPU: 17  COMMAND: "poweroff"

crash> bt 2136 
PID: 2136   TASK: ffff99f3fef64f10  CPU: 17  COMMAND: "poweroff"
 #0 [ffff99f0c577faf8] __schedule at ffffffff92b128d4
 #1 [ffff99f0c577fb88] schedule at ffffffff92b12f49
 #2 [ffff99f0c577fb98] schedule_timeout at ffffffff92b108b9
 #3 [ffff99f0c577fc40] io_schedule_timeout at ffffffff92b1245d
 #4 [ffff99f0c577fc70] io_schedule at ffffffff92b124f8
 #5 [ffff99f0c577fc80] bit_wait_io at ffffffff92b10ee1
 #6 [ffff99f0c577fc98] __wait_on_bit at ffffffff92b10a07
 #7 [ffff99f0c577fcd8] wait_on_page_bit at ffffffff92592f11
 #8 [ffff99f0c577fd30] __filemap_fdatawait_range at ffffffff92593041
 #9 [ffff99f0c577fe08] filemap_fdatawait_keep_errors at ffffffff92595ff7
#10 [ffff99f0c577fe18] sync_inodes_sb at ffffffff9264a395
#11 [ffff99f0c577fee0] sync_inodes_one_sb at ffffffff9264ec39
#12 [ffff99f0c577fef0] iterate_supers at ffffffff9261f093
#13 [ffff99f0c577ff30] sys_sync at ffffffff9264ef14
#14 [ffff99f0c577ff50] system_call_fastpath at ffffffff92b1f7d5