client: Install openstackclient

The manila CLI was already deprecated in favor of the openstack CLI
plugin[1]. Install openstackclient when client is requested so that
the openstack CLI can be used.

[1] ba9a3887869ecd4cbed4aeb43c11a3d9493fafa2

Change-Id: I4589f6d74b3f4b6b88333306eb013b91fc0a9d44

manifests/client.pp

@@ -19,4 +19,6 @@ class manila::client (
     name   => $::manila::params::client_package,
     tag    => ['openstack', 'openstackclient'],
   }
+
+  include openstacklib::openstackclient
 }

spec/classes/manila_client_spec.rb

@@ -14,6 +14,8 @@ describe 'manila::client' do
         :tag    => ['openstack', 'openstackclient'],
       )
     end
+
+    it { is_expected.to contain_class('openstacklib::openstackclient') }
   end
 
   on_supported_os({