promise/plugin: check_file_state configurability fix

Honor result_count and failure_amount in the test method too.

slapos/promise/plugin/check_file_state.py

@@ -57,6 +57,10 @@ class RunPromise(GenericPromise):
     else:
       self.logger.info("OK %r state %r" % (filename, state))
 
+  def test(self):
+    return self._test(
+      result_count=self.result_count, failure_amount=self.failure_amount)
+
   def anomaly(self):
     return self._anomaly(
       result_count=self.result_count, failure_amount=self.failure_amount)