Here are the lines after installing packstack and that controller.pp error:

[root@itel ~]# packstack --answer-file=answer.txt --timeout=1200
....................................................[ DONE]
Applying 10.10.20.178_controller.pp
10.10.20.178_controller.pp:                       [ ERROR ]           
Applying Puppet manifests                         [ ERROR ]

ERROR : Error appeared during Puppet run: 10.10.20.178_controller.pp
Error: Systemd start for openstack-nova-scheduler failed!
You will find full trace in log /var/tmp/packstack/20170523-092723-rHEVlb/manifests/10.10.20.178_controller.pp.log
Please check log file /var/tmp/packstack/20170523-092723-rHEVlb/openstack-setup.log for more information
Additional information:
 * Time synchronization installation was skipped. Please note that unsynchronized time on server instances might be problem for some OpenStack components.
 * File /root/keystonerc_admin has been created on OpenStack client host 10.10.20.178. To use the command line tools you need to source the file.
 * To access the OpenStack Dashboard browse to http://10.10.20.178/dashboard .
Please, find your login credentials stored in the keystonerc_admin in your home directory.
[root@itel ~]# 

And following is the open-setup.log:

[root@itel ~]# tail -f /var/tmp/packstack/20170523-092723-rHEVlb/openstack-setup.log

2017-05-23 09:30:10::INFO::shell::94::root:: [10.10.20.178] Executing script:
echo $HOME
2017-05-23 09:30:19::INFO::shell::94::root:: [localhost] Executing script:
cd /var/tmp/packstack/20170523-092723-rHEVlb/hieradata
tar --dereference -cpzf - ../hieradata | ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null root@10.10.20.178 tar -C /var/tmp/packstack/185614c58b6b4387bab040ec181a1bc2 -xpzf -
cd /usr/lib/python2.7/site-packages/packstack/puppet
cd /var/tmp/packstack/20170523-092723-rHEVlb/manifests
tar --dereference -cpzf - ../manifests | ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null root@10.10.20.178 tar -C /var/tmp/packstack/185614c58b6b4387bab040ec181a1bc2 -xpzf -
cd /usr/share/openstack-puppet/modules
tar --dereference -cpzf - aodh apache ceilometer certmonger cinder concat firewall glance gnocchi heat horizon inifile ironic keystone magnum manila memcached mongodb mysql neutron nova nssdb openstack openstacklib oslo packstack panko rabbitmq redis remote rsync sahara ssh stdlib swift sysctl tempest trove vcsrepo vswitch xinetd | ssh -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null root@10.10.20.178 tar -C /var/tmp/packstack/185614c58b6b4387bab040ec181a1bc2/modules -xpzf -



2017-05-23 09:37:32::ERROR::run_setup::1027::root:: Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/packstack/installer/run_setup.py", line 1022, in main
    _main(options, confFile, logFile)
  File "/usr/lib/python2.7/site-packages/packstack/installer/run_setup.py", line 678, in _main
    runSequences()
  File "/usr/lib/python2.7/site-packages/packstack/installer/run_setup.py", line 645, in runSequences
    controller.runAllSequences()
  File "/usr/lib/python2.7/site-packages/packstack/installer/setup_controller.py", line 81, in runAllSequences
    sequence.run(config=self.CONF, messages=self.MESSAGES)
  File "/usr/lib/python2.7/site-packages/packstack/installer/core/sequences.py", line 109, in run
    step.run(config=config, messages=messages)
  File "/usr/lib/python2.7/site-packages/packstack/installer/core/sequences.py", line 50, in run
    self.function(config, messages)
  File "/usr/lib/python2.7/site-packages/packstack/plugins/puppet_950.py", line 214, in apply_puppet_manifest
    wait_for_puppet(currently_running, messages)
  File "/usr/lib/python2.7/site-packages/packstack/plugins/puppet_950.py", line 128, in wait_for_puppet
    validate_logfile(log)
  File ...