Add param use_no_cache to the openstack::auth_file

Fix bug 1169993

   This patch contains:
      *  use_no_cache param will add BooleanVar OS_NO_CACHE to the openrc,
         in the default its value is true.
      *  add the openstack_auth_file_spec for test.

Change-Id: I3885bccb4c06bbe652f7fee1d5db83913d8cd79b

manifests/auth_file.pp

@@ -8,11 +8,13 @@ class openstack::auth_file(
   $controller_node      = '127.0.0.1',
   $keystone_admin_token = 'keystone_admin_token',
   $admin_user           = 'admin',
-  $admin_tenant         = 'admin'
+  $admin_tenant         = 'admin',
+  $use_no_cache         = 'true'
 ) {
   file { '/root/openrc':
     content =>
   "
+  export OS_NO_CACHE=${use_no_cache}
   export OS_TENANT_NAME=${admin_tenant}
   export OS_USERNAME=${admin_user}
   export OS_PASSWORD='${admin_password}'

spec/classes/openstack_auth_file_spec.rb

@@ -0,0 +1,55 @@
+require 'spec_helper'
+
+describe 'openstack::auth_file' do
+
+  describe "when only passing required class parameters" do
+
+    let :params do
+      { :admin_password => 'admin' }
+    end
+
+    it 'should create a openrc file' do
+      should contain_file('/root/openrc').with_content(
+  '
+  export OS_NO_CACHE=true
+  export OS_TENANT_NAME=admin
+  export OS_USERNAME=admin
+  export OS_PASSWORD=\'admin\'
+  export OS_AUTH_URL="http://127.0.0.1:5000/v2.0/"
+  export OS_AUTH_STRATEGY=keystone
+  export SERVICE_TOKEN=keystone_admin_token
+  export SERVICE_ENDPOINT=http://127.0.0.1:35357/v2.0/
+  '
+        )
+    end
+  end
+
+  describe 'when overridding' do
+
+      let :params do
+        {
+          :admin_password        => 'nova',
+          :controller_node       => '127.0.0.2',
+          :keystone_admin_token  => 'keystone',
+          :admin_user            => 'nova',
+          :admin_tenant          => 'nova',
+          :use_no_cache          => 'false',
+        }
+      end
+
+      it 'should create a openrc file' do
+        should contain_file('/root/openrc').with_content(
+  '
+  export OS_NO_CACHE=false
+  export OS_TENANT_NAME=nova
+  export OS_USERNAME=nova
+  export OS_PASSWORD=\'nova\'
+  export OS_AUTH_URL="http://127.0.0.2:5000/v2.0/"
+  export OS_AUTH_STRATEGY=keystone
+  export SERVICE_TOKEN=keystone
+  export SERVICE_ENDPOINT=http://127.0.0.2:35357/v2.0/
+  '
+        )
+      end
+  end
+end