sanity_checks: add missing kuryr net_plugin

Lacking this entry made the sanity check tasks fail when deploying
openshift on openstack with kuryr.

Change-Id: Ia139d0474f0de9584c814b6dc0e2bc8f4ea1eb84
Signed-off-by: Antoni Segura Puimedon <antonisp@celebdor.com>

roles/lib_utils/action_plugins/sanity_checks.py

@@ -15,7 +15,8 @@ NET_PLUGIN_LIST = (('openshift_use_openshift_sdn', True),
                    ('openshift_use_flannel', False),
                    ('openshift_use_nuage', False),
                    ('openshift_use_contiv', False),
-                   ('openshift_use_calico', False))
+                   ('openshift_use_calico', False),
+                   ('openshift_use_kuryr', False))
 
 ENTERPRISE_TAG_REGEX_ERROR = """openshift_image_tag must be in the format
 v#.#[.#[.#]]. Examples: v1.2, v3.4.1, v3.5.1.3,