Use new openstackclient tag

This looses dependency using the new openstackclient tag, which
requires only packages actually related to openstack CLI.

Also, mistralclient is not required by mistral itself so the service
package tag can be removed.

Depends-on: https://review.opendev.org/899594
Change-Id: I9752cc53f02fbe78afc286aadf91c6aa55d4116b

manifests/client.pp

@@ -17,7 +17,7 @@ class mistral::client(
   package { 'python-mistralclient':
     ensure => $package_ensure,
     name   => $::mistral::params::client_package,
-    tag    => ['openstack', 'mistral-package'],
+    tag    => ['openstack', 'openstackclient'],
   }
 
   include openstacklib::openstackclient

manifests/deps.pp

@@ -41,8 +41,8 @@ class mistral::deps {
   # will have clients available to create resources. This tag handles the
   # openstackclient but indirectly since the client is not available in
   # all catalogs that don't need the client class (like many spec tests)
-  Package<| tag == 'openstack'|>
-  ~> Anchor['mistral::service::end']
+  Package<| tag == 'openstackclient'|>
+  -> Anchor['mistral::service::end']
 
   # Installation or config changes will always restart services.
   Anchor['mistral::install::end'] ~> Anchor['mistral::service::begin']

spec/classes/mistral_client_spec.rb

@@ -11,7 +11,7 @@ describe 'mistral::client' do
       is_expected.to contain_package('python-mistralclient').with(
         :ensure => 'present',
         :name   => platform_params[:client_package],
-        :tag    => ['openstack', 'mistral-package']
+        :tag    => ['openstack', 'openstackclient']
       )
     end