Fix cephfs-nfs job

Now that manila-tempest-plugin-cephfs-nfs is a cephadm
based job, and it is using Reef, we must add
CEPH_INGRESS_IP to job declaration.

Change-Id: Ib4a4479d5214f6c3a01ca1bd6301e44658bfec50
diff --git a/zuul.d/manila-tempest-jobs.yaml b/zuul.d/manila-tempest-jobs.yaml
index 56fc039..cd48dd8 100644
--- a/zuul.d/manila-tempest-jobs.yaml
+++ b/zuul.d/manila-tempest-jobs.yaml
@@ -515,6 +515,7 @@
         MANILA_SETUP_IPV6: false
         NEUTRON_CREATE_INITIAL_NETWORKS: true
         IP_VERSION: 4
+        CEPH_INGRESS_IP: "{{hostvars['controller'].ansible_default_ipv6.address}}"
 
 - job:
     name: manila-tempest-plugin-multinode-base