Description of problem:

The /etc/multipath.conf file that gets configured as part of OCS deployment is missing the following line:
  
  'hardware_handler "1 alua" ' 

# cat /etc/multipath.conf
# LIO iSCSI
# TODO: Add env variables for tweaking
devices {
        device {
                vendor "LIO-ORG"
                user_friendly_names "yes" 
                path_grouping_policy "failover"
                path_selector "round-robin 0"
                failback immediate
                path_checker "tur"
                prio "alua"
                no_path_retry 120
                rr_weight "uniform"
        }
}
defaults {
	user_friendly_names yes
	find_multipaths yes
}


Version-Release number of selected component (if applicable):

oc v3.11.69

heketi-client-8.0.0-8.el7rhgs.x86_64
heketi-8.0.0-8.el7rhgs.x86_64

glusterfs-api-3.12.2-32.el7rhgs.x86_64
glusterfs-cli-3.12.2-32.el7rhgs.x86_64
python2-gluster-3.12.2-32.el7rhgs.x86_64
glusterfs-fuse-3.12.2-32.el7rhgs.x86_64
glusterfs-geo-replication-3.12.2-32.el7rhgs.x86_64
glusterfs-libs-3.12.2-32.el7rhgs.x86_64
glusterfs-3.12.2-32.el7rhgs.x86_64
glusterfs-client-xlators-3.12.2-32.el7rhgs.x86_64
glusterfs-server-3.12.2-32.el7rhgs.x86_64
gluster-block-0.2.1-30.el7rhgs.x86_64

libtcmu-1.2.0-28.el7rhgs.x86_64
tcmu-runner-1.2.0-28.el7rhgs.x86_64

targetcli-2.1.fb46-7.el7.noarch


Actual results: 

'hardware_handler "1 alua" ' missing from multipath.conf file

Expected results:

The content of multipath.conf file

# cat /etc/multipath.conf
# LIO iSCSI
# TODO: Add env variables for tweaking
devices {
        device {
                vendor "LIO-ORG"
                user_friendly_names "yes" # names like mpatha
                path_grouping_policy "failover" # one path per group
                hardware_handler "1 alua"
                path_selector "round-robin 0"
                failback immediate
                path_checker "tur"
                prio "alua"
                no_path_retry 120
        }
}
defaults {
	user_friendly_names yes
	find_multipaths yes
}