Fix job inheritance hierarchy

I wonder why Zuul have not caught this :(.

Change-Id: I645b0e2d2fb8953985bf0c83bfb5a0b65a3fb075
diff --git a/zuul.yaml b/zuul.yaml
index b2b4596..f9ebf42 100644
--- a/zuul.yaml
+++ b/zuul.yaml
@@ -14,7 +14,7 @@
 
 - job:
     name: run-ci-build-sh-f31
-    parent: run-ci-build-sh-f31
+    parent: run-ci-build-sh
 
 - job:
     name: promote-artifacts