PR created in master: https://github.com/openshift/openshift-ansible/pull/9424

Wait for a new ocp build containing the fix to verify the bug.

ansible-2.6.2-1.el7ae.noarch
openshift-ansible-3.11.0-0.14.0.git.0.7bd4429None.noarch
Update ocp3.10 to 3.11 with above packages, upgrade won't fail at task "Check for cluster health of glusterfs" now.
----------------------
TASK [openshift_storage_glusterfs : Check for cluster health of glusterfs] *****
task path: /usr/share/ansible/openshift-ansible/roles/openshift_storage_glusterfs/tasks/check_cluster_health.yml:4
Monday 13 August 2018  05:47:24 +0000 (0:00:00.137)       0:02:23.020 ********* 
skipping: [ec2-54-209-248-187.compute-1.amazonaws.com] => {"changed": false, "skip_reason": "Conditional result was False"}

TASK [openshift_storage_glusterfs : Check for cluster health of glusterfs (registry)] ***
task path: /usr/share/ansible/openshift-ansible/roles/openshift_storage_glusterfs/tasks/check_cluster_health.yml:21
Monday 13 August 2018  05:47:25 +0000 (0:00:00.138)       0:02:23.159 ********* 
skipping: [ec2-54-209-248-187.compute-1.amazonaws.com] => {"changed": false, "skip_reason": "Conditional result was False"}
META: ran handlers
META: ran handlers
--------------------------------

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2018:2652