Fix Redfish jobs by pinning sushy-tools

Sushy-tools pulls in master branch by default based
on the job configuration, however we recently merged
support into sushy-tools which requires a version of
ironic-lib, which is unavailable to this system resulting
in an exception.

File "/opt/stack/sushy-tools/sushy_tools/emulator/main.py", line 24, in <module>
  from ironic_lib import auth_basic
ImportError: cannot import name 'auth_basic'

*Also* Temporarily disables the grub2 jobs to allow multiple
fixes to be merged in sequence.

Change-Id: Ie8c10db135a77bd4cc2e17a266a45cca65100199

zuul.d/ironic-jobs.yaml

@@ -148,7 +148,8 @@
     parent: ironic-base
     timeout: 5400
     required-projects:
-      - openstack/sushy-tools
+      - name: openstack/sushy-tools
+        override-checkout: 0.17.0
     vars:
       devstack_localrc:
         IRONIC_DEPLOY_DRIVER: redfish

zuul.d/project.yaml

@@ -24,7 +24,9 @@
         - ironic-tempest-ipa-wholedisk-bios-agent_ipmitool-indirect
         - ironic-tempest-ipa-partition-bios-agent_ipmitool-indirect
         - ironic-tempest-bfv
-        - ironic-tempest-ipa-partition-uefi-pxe-grub2
+        # Temporary to allow for multiple breakages to be resolved.
+        - ironic-tempest-ipa-partition-uefi-pxe-grub2:
+            voting: false
         - metalsmith-integration-glance-localboot-centos7
         # Non-voting jobs
         - ironic-tox-bandit:
@@ -61,7 +63,7 @@
         - ironic-tempest-ipa-wholedisk-bios-agent_ipmitool-indirect
         - ironic-tempest-ipa-partition-bios-agent_ipmitool-indirect
         - ironic-tempest-bfv
-        - ironic-tempest-ipa-partition-uefi-pxe-grub2
+        # - ironic-tempest-ipa-partition-uefi-pxe-grub2
         - metalsmith-integration-glance-localboot-centos7
     experimental:
       jobs: