`crm_mon -s` prints `"CLUSTER OK"` when there are nodes in `UNCLEAN (online)` status

Issue

• crm_mon -s prints "CLUSTER OK" when there are nodes in UNCLEAN (online) status.
• crm_mon shows a problem and crm_mon -s does not.

# crm_mon -1
Stack: corosync
Current DC: node-1 (version 1.1.18-11.el7-2b07d5c5a9) - partition with quorum
Last updated: Tue May  8 16:56:22 2018
Last change: Tue May  8 16:55:58 2018 by root via cibadmin on node-1

2 nodes configured
7 resources configured

Node node-2: UNCLEAN (online)
Online: [ node-1 ]

Active resources:

 Clone Set: dlm-clone [dlm]
     Started: [ node-1 node-2 ]
 Clone Set: clvmd-clone [clvmd]
     Started: [ node-1 node-2 ]
 Clone Set: clusterfs-clone [clusterfs]
     clusterfs  (ocf::heartbeat:Filesystem):    FAILED node-2
     Started: [ node-1 ]
 xvm    (stonith:fence_xvm):    Started node-1

Failed Actions:
* clusterfs_monitor_60000 on node-2 'not running' (7): call=26, status=complete, exitreason='',
    last-rc-change='Tue May  8 16:55:40 2018', queued=0ms, exec=0ms


# crm_mon -s
CLUSTER OK: 2 nodes online, 7 resources configured