Functional test node remove

The functional tests create nodes but never remove them.  This patch
introduces a Base.tearDown() method to remove nodes created during the
testcase setup.

Change-Id: I480d89512f265e1b459a009e464077b3771f0a66

ironic_inspector/test/functional.py

@@ -40,6 +40,7 @@ from ironic_inspector import db
 from ironic_inspector import dbsync
 from ironic_inspector import introspection_state as istate
 from ironic_inspector import main
+from ironic_inspector import node_cache
 from ironic_inspector import rules
 from ironic_inspector.test import base
 
@@ -133,6 +134,10 @@ class Base(base.NodeTest):
         conf_file = get_test_conf_file()
         self.cfg.set_config_files([conf_file])
 
+    def tearDown(self):
+        super(Base, self).tearDown()
+        node_cache._delete_node(self.uuid)
+
     def call(self, method, endpoint, data=None, expect_error=None,
              api_version=None):
         if data is not None: