Installation Error from PackStack

Issue

Running packstack with answer file, To install a single node installation with 4 iscsi targets for swift, results in an error.

bash: line 3: subscription-manager: command not found
+ true
+ subscription-manager list --consumed
+ grep -i openstack
bash: line 4: subscription-manager: command not found
++ subscription-manager list --available
++ grep -e 'Red Hat OpenStack' -m 1 -A 2
bash: line 4: subscription-manager: command not found
++ awk '{print $3}'
++ grep 'Pool Id'
+ subscription-manager subscribe --pool
bash: line 4: subscription-manager: command not found
++ t
++ exit 127