Make providers use auth_url for authentication

When reading credentials from the configuration's keystone_authtoken
section www_authenticate_uri was used as URL for Keystone.
As www_authenticate_uri is a public endpoint that is not necessarily
reachable for the Puppet agent, this change uses the more appropriate
auth_url as Keystone URL.

Change-Id: I52fdeaaf773e0fc7e111e58ffb02ef9485eed260

lib/puppet/provider/nova.rb

@@ -82,7 +82,7 @@ class Puppet::Provider::Nova < Puppet::Provider::Openstack
 
   def self.get_nova_credentials
     #needed keys for authentication
-    auth_keys = ['www_authenticate_uri', 'project_name', 'username', 'password']
+    auth_keys = ['auth_url', 'project_name', 'username', 'password']
     conf = nova_conf
     if conf and conf['keystone_authtoken'] and
         auth_keys.all?{|k| !conf['keystone_authtoken'][k].nil?}
@@ -111,7 +111,7 @@ class Puppet::Provider::Nova < Puppet::Provider::Openstack
 
   def self.get_auth_endpoint
     q = nova_credentials
-    "#{q['www_authenticate_uri']}"
+    "#{q['auth_url']}"
   end
 
   def self.auth_endpoint

lib/puppet/type/nova_aggregate.rb

@@ -50,7 +50,7 @@ Puppet::Type.newtype(:nova_aggregate) do
   ensurable
 
   autorequire(:nova_config) do
-    ['www_authenticate_uri', 'project_name', 'username', 'password']
+    ['auth_url', 'project_name', 'username', 'password']
   end
 
   newparam(:name, :namevar => true) do

lib/puppet/type/nova_flavor.rb

@@ -56,7 +56,7 @@ Puppet::Type.newtype(:nova_flavor) do
   ensurable
 
   autorequire(:nova_config) do
-    ['www_authenticate_uri', 'project_name', 'username', 'password']
+    ['auth_url', 'project_name', 'username', 'password']
   end
 
   # Require the nova-api service to be running
@@ -151,4 +151,3 @@ Puppet::Type.newtype(:nova_flavor) do
   end
 
 end
-

spec/unit/provider/nova_spec.rb

@@ -11,11 +11,11 @@ describe Puppet::Provider::Nova do
 
   let :credential_hash do
     {
-      'www_authenticate_uri' => 'https://192.168.56.210:5000/v2.0/',
-      'project_name'         => 'admin_tenant',
-      'username'             => 'admin',
-      'password'             => 'password',
-      'region_name'          => 'Region1',
+      'auth_url'     => 'https://192.168.56.210:5000/v2.0/',
+      'project_name' => 'admin_tenant',
+      'username'     => 'admin',
+      'password'     => 'password',
+      'region_name'  => 'Region1',
     }
   end