Remove openstacksdk from siblings job

This re-enables the siblings job in nodepool but omits master
openstacksdk which is currently in an incompatible state.  This
also fixes the dib gate, which uses this job as the basis for
its functional testing.

Change-Id: Id268993dd88079f54516a020555b3e2b40de8394

.zuul.yaml

@@ -132,7 +132,6 @@
     required-projects:
       - zuul/nodepool
       - openstack/diskimage-builder
-      - openstack/openstacksdk
     requires:
       - python-builder-3.9-bullseye-container-image
       - python-base-3.9-bullseye-container-image
@@ -145,15 +144,12 @@
           target: nodepool-launcher
           tags:
             - siblings
-          siblings:
-            - opendev.org/openstack/openstacksdk
         - context: .
           repository: zuul/nodepool-builder
           target: nodepool-builder
           tags:
             - siblings
           siblings:
-            - opendev.org/openstack/openstacksdk
             - opendev.org/openstack/diskimage-builder
 
 - job:
@@ -286,6 +282,7 @@
       jobs:
         - opendev-buildset-registry
         - nodepool-build-image
+        - nodepool-build-image-siblings
         - zuul-tox-docs
         - tox-pep8
         - nodepool-tox-py36
@@ -294,6 +291,7 @@
         - nodepool-zuul-functional:
             voting: false
         - nodepool-functional-container-openstack-release
+        - nodepool-functional-container-openstack-siblings
         - nodepool-functional-k8s
         - nodepool-functional-openshift
         - zuul-quick-start: