Create auxiliary repo with fuel version

Fuel 7.0 auxiliary repo should be created
as /etc/yum.repos.d/7.0_auxiliary

This helps with upgrade/rollback process for
Fuel Master.

The configuration for auxiliary repository on
deployed Fuel nodes is unchanged.

Change-Id: Iec2645ddbee6b1b6b9e5c2816707b275542ef51b
Partial-Bug: #1480282

deployment/puppet/nailgun/examples/host-only.pp

@@ -30,6 +30,7 @@ class { 'osnailyfacter::atop': }
 
 class { 'nailgun::host':
   production        => $production,
+  fuel_version      => $::fuel_version['VERSION']['release'],
   cobbler_host      => $::fuel_settings['ADMIN_NETWORK']['ipaddress'],
   nailgun_group     => $nailgun_group,
   nailgun_user      => $nailgun_user,

deployment/puppet/nailgun/examples/host-upgrade.pp

@@ -25,6 +25,7 @@ class { 'nailgun::packages': }
 
 class { 'nailgun::host':
   production        => $production,
+  fuel_version      => $::fuel_version['VERSION']['release'],
   cobbler_host      => $::fuel_settings['ADMIN_NETWORK']['ipaddress'],
   nailgun_group     => $nailgun_group,
   nailgun_user      => $nailgun_user,

deployment/puppet/nailgun/manifests/auxiliaryrepos.pp

@@ -1,6 +1,7 @@
 class nailgun::auxiliaryrepos(
-  $repo_root  = '/var/www/nailgun',
-  $priority = '15',
+  $fuel_version,
+  $repo_root    = '/var/www/nailgun',
+  $priority     = '15',
   ){
 
   $centos_dir = "${repo_root}/centos/auxiliary/"
@@ -16,11 +17,11 @@ class nailgun::auxiliaryrepos(
   File[$centos_dir] ->
     Package['createrepo'] ->
       Exec["createrepo ${centos_dir}"] ->
-        Yumrepo['auxiliary']
+        Yumrepo["${fuel_version}_auxiliary"]
 
-  yumrepo { 'auxiliary':
-    name     => 'auxiliary',
-    descr    => 'auxillary',
+  yumrepo { "${fuel_version}_auxiliary":
+    name     => "${fuel_version}_auxiliary",
+    descr    => "${fuel_version}_auxiliary",
     baseurl  => "file://${centos_dir}",
     gpgcheck => '0',
     priority => $priority,

deployment/puppet/nailgun/manifests/host.pp

@@ -1,5 +1,6 @@
 class nailgun::host(
 $production,
+$fuel_version,
 $cobbler_host = '127.0.0.1',
 $dns_search = 'domain.tld',
 $dns_domain = 'domain.tld',
@@ -27,7 +28,8 @@ $admin_iface = 'eth0',
   }
 
   class { 'nailgun::auxiliaryrepos':
-    repo_root  => $repo_root,
+    fuel_version => $fuel_version,
+    repo_root    => $repo_root,
   }
 
   nailgun::sshkeygen { '/root/.ssh/id_rsa':