Add a test for introspection abort action verification.

Change-Id: Ia2c371a862a800220323e81545e6a8693dac51f0
diff --git a/ironic_tempest_plugin/services/introspection_client.py b/ironic_tempest_plugin/services/introspection_client.py
index cce5213..2934e54 100644
--- a/ironic_tempest_plugin/services/introspection_client.py
+++ b/ironic_tempest_plugin/services/introspection_client.py
@@ -73,3 +73,13 @@
         self.expected_success(202, resp.status)
 
         return resp
+
+    @base.handle_errors
+    def abort_introspection(self, uuid):
+        """Abort introspection for a node."""
+        resp, _body = self.post(url=('/%s/introspection/%s/abort' %
+                                     (self.uri_prefix, uuid)),
+                                body=None)
+        self.expected_success(202, resp.status)
+
+        return resp