Undetected errors during execution of keystone.pp

[Zdenek Dvorak]

Hello,
I tried to install openstack - kilo using packstack. Installation was done according to described on page: https://www.rdoproject.org/Quickstart.

Openstack installation was started by command:
 packstack -d --allinone

....
This resulted in packstack error messge:
10.166.15.84_keystone.pp: [ ERROR ]
Applying Puppet manifests [ ERROR ]

ERROR : Error appeared during Puppet run: 10.166.15.84_keystone.pp
Error: Could not prefetch keystone_service provider 'openstack': undefined method `collect' for nil:NilClass
You will find full trace in log /var/tmp/packstack/20151015-013212-8HFmQj/manifests/10.166.15.84_keystone.pp.log
Please check log file /var/tmp/packstack/20151015-013212-8HFmQj/openstack-setup.log for more information
Additional information:
...

Here is related part of file 10.166.15.84_keystone.pp.log

...
Debug: Executing '/usr/bin/openstack service list --quiet --format csv --long'
Error: Could not prefetch keystone_service provider 'openstack': undefined method `collect' for nil:NilClass
/var/tmp/packstack/58f9cca5ff134cf8b2902bb01f6b889a/modules/keystone/lib/puppet/provider/keystone_service/openstack.rb:62:in `instances'
...
This error message is result of code code from file openstack.rb, which is part of packstack.
 60 def self.instances
 61 list = request('service', 'list', '--long')
 62 list.collect do |service|
 63 new(
 64 :name => service[:name],
 65 :ensure => :present,
 66 :type => service[:type],
 67 :description => service[:description],
 68 :id => service[:id]
 69 )
 70 end
 71 end

line 61 list = request('service', 'list', '--long') will start command : /usr/bin/openstack service list --quiet --format csv --long

result fo this commabd is in stderror: "ERROR: openstack Unable to establish connection to http://10.166.15.84"
and exit code is :1

line 62 " list.collect do |service| " is working with this error result and final error message
 Error: Could not prefetch keystone_service provider 'openstack': undefined method `collect' for nil:NilClass

Command "/usr/bin/openstack" is used during execution of keystone.pp. This command can fail because of problem with authentication, connection or some other. Puppet does not discover this error. As a result puppet will waist time in subsequent useless work, or generate misleading error message. This error makes debugging of packstack installation more complicated and time demanding.