add option for docker_storage_driver

Change-Id: Idd7a5277b7f6d2eb3eb54f9be5ced2e98fd4f710

magnum_tempest_plugin/common/config.py

@@ -78,6 +78,10 @@ class Config(object):
         else:
             cls.admin_role = 'admin'
 
+    @classmethod
+    def set_docker_storage_driver(cls, config):
+        cls.docker_storage_driver = CONF.magnum.get('docker_storage_driver')
+
     @classmethod
     def set_region(cls, config):
         if 'region' in CONF.identity:
@@ -153,6 +157,7 @@ class Config(object):
         cls.set_auth_url(config)
         cls.set_admin_role(config)
 
+        cls.set_docker_storage_driver(config)
         cls.set_region(config)
         cls.set_image_id(config)
         cls.set_nic_id(config)

magnum_tempest_plugin/common/datagen.py

@@ -505,6 +505,7 @@ def valid_cluster_template(is_public=False):
         http_proxy=None, https_proxy=None,
         no_proxy=None, network_driver=config.Config.network_driver,
         volume_driver=None, labels={},
+        docker_storage_driver=config.Config.docker_storage_driver,
         tls_disabled=False)
 
 

magnum_tempest_plugin/config.py

@@ -28,6 +28,9 @@ ServiceAvailableGroup = [
 magnum_group = cfg.OptGroup(name="magnum", title="Magnum Options")
 
 MagnumGroup = [
+    cfg.StrOpt("docker_storage_driver",
+               help="Docker storage driver. Supported: devicemapper, overlay"),
+
     cfg.StrOpt("image_id",
                default="fedora-atomic-latest",
                help="Image id to be used for ClusterTemplate."),