Adapt ironic-conductor manifest

Upstream puppet-ironic patch I2f929ee43566b29add097bc8ef29d818c62c4684
broke ironic deployment and noop tests so we need to adapt our library.

Change-Id: Ieaaa66b674abf93662717c0f0b8838128447aa04
Closes-bug: #1617332

deployment/puppet/openstack_tasks/manifests/roles/ironic_conductor.pp

@@ -157,10 +157,7 @@ class openstack_tasks::roles::ironic_conductor {
     require   => File["${tftp_root}/map-file"],
   }
 
-  package { 'ipmitool':
-    ensure => 'present',
-    before => Class['::ironic::conductor'],
-  }
+  ensure_packages('ipmitool', { ensure => 'present' })
 
   file { '/etc/ironic/fuel_key':
     ensure  => present,

tests/noop/spec/hosts/roles/ironic-conductor_spec.rb

@@ -36,6 +36,10 @@ describe manifest do
         )
       end
 
+      it 'should contain ipmitool package' do
+        should contain_package('ipmitool')
+      end
+
       it 'should declare ironic::conductor class correctly' do
         should contain_class('ironic::conductor').with(
           'api_url' => "http://#{baremetal_vip}:6385",