Release ironic 9.0.1 for Pike

This is still not our final release. We release it, because our 9.0.0
release had upgrade problems that we urgently need to fix.

We will release 9.1.0 in the coming days with the features that were
delayed because of our problems with grenade (which was hard-broken
until we created stable/pike).

Please see the following thread for the context:
http://lists.openstack.org/pipermail/openstack-dev/2017-August/121252.html

Change-Id: I3c941d64fa1c1c252ba3761efd0953f2d705ab12

deliverables/pike/ironic.yaml

@@ -16,3 +16,7 @@ releases:
     projects:
       - repo: openstack/ironic
         hash: 9d914c85939bcbdd64c28ba9899b730c01d74df1
+  - version: 9.0.1
+    projects:
+      - repo: openstack/ironic
+        hash: 16ac17cbb7414254d72a5e791c6ecf7714094277