Add screenshots for:
/clouds/openstack/{cloud_context}/stack/add_extra /clouds/openstack/{cloud_context}/stack/add /clouds/openstack/{cloud_context}/stack/{openstack_stack}/check /clouds/openstack/{cloud_context}/stack /clouds/openstack/{cloud_context}/stack/{openstack_stack}/delete /clouds/openstack/{cloud_context}/stack/{openstack_stack}/edit_extra /clouds/openstack/{cloud_context}/stack/{openstack_stack}/edit /clouds/openstack/{cloud_context}/stack/preview_extra /clouds/openstack/{cloud_context}/stack/preview /clouds/openstack/{cloud_context}/stack/{openstack_stack}/resume /clouds/openstack/{cloud_context}/stack/{openstack_stack}/suspend /clouds/openstack/{cloud_context}/stack/{openstack_stack}/event /clouds/openstack/{cloud_context}/stack/{openstack_stack}/resource
Closes #3409555