16.04.2 provision failed on nova compute pkg unmet dependencies

Provision of mainline 3073 newton on 16.04.2 cluster from 3073 mitaka 14.04 SM.

TASK [openstack/compute : Install nova compute packages] ***********************
failed: [10.0.0.6] (item=[u'contrail-setup', u'nova-compute']) => {"cache_update_time": 1494251429, "cache_updated": false, "failed": true, "item": ["contrail-setup", "nova-compute"], "msg": "'/usr/bin/apt-get -y -o \"Dpkg::Options::=--force-confdef\" -o \"Dpkg::Options::=--force-confold\" --force-yes install 'nova-compute'' failed: E: Unable to correct problems, you have held broken packages.\n", "stderr": "E: Unable to correct problems, you have held broken packages.\n", "stdout": "Reading package lists...\nBuilding dependency tree...\nReading state information...\nSome packages could not be installed. This may mean that you have\nrequested an impossible situation or if you are using the unstable\ndistribution that some required packages have not yet been created\nor been moved out of Incoming.\nThe following information may help to resolve the situation:\n\nThe following packages have unmet dependencies:\n nova-compute : Depends: nova-compute-kvm but it is not going to be installed or\n nova-compute-hypervisor\n", "stdout_lines": ["Reading package lists...", "Building dependency tree...", "Reading state information...", "Some packages could not be installed. This may mean that you have", "requested an impossible situation or if you are using the unstable", "distribution that some required packages have not yet been created", "or been moved out of Incoming.", "The following information may help to resolve the situation:", "", "The following packages have unmet dependencies:", " nova-compute : Depends: nova-compute-kvm but it is not going to be installed or", " nova-compute-hypervisor"]}
failed: [10.0.0.7] (item=[u'contrail-setup', u'nova-compute']) => {"cache_update_time": 1494251429, "cache_updated": false, "failed": true, "item": ["contrail-setup", "nova-compute"], "msg": "'/usr/bin/apt-get -y -o \"Dpkg::Options::=--force-confdef\" -o \"Dpkg::Options::=--force-confold\" --force-yes install 'nova-compute'' failed: E: Unable to correct problems, you have held broken packages.\n", "stderr": "E: Unable to correct problems, you have held broken packages.\n", "stdout": "Reading package lists...\nBuilding dependency tree...\nReading state information...\nSome packages could not be installed. This may mean that you have\nrequested an impossible situation or if you are using the unstable\ndistribution that some required packages have not yet been created\nor been moved out of Incoming.\nThe following information may help to resolve the situation:\n\nThe following packages have unmet dependencies:\n nova-compute : Depends: nova-compute-kvm but it is not going to be installed or\n nova-compute-hypervisor\n", "stdout_lines": ["Reading package lists...", "Building dependency tree...", "Reading state information...", "Some packages could not be installed. This may mean that you have", "requested an impossible situation or if you are using the unstable", "distribution that some required packages have not yet been created", "or been moved out of Incoming.", "The following information may help to resolve the situation:", "", "The following packages have unmet dependencies:", " nova-compute : Depends: nova-compute-kvm but it is not going to be installed or", " nova-compute-hypervisor"]}
        to retry, use: --limit @/opt/contrail/server_manager/ansible/playbooks/combined_image_mainline/playbooks/site.retry

root@server3:~# apt-get install nova-compute
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 nova-compute : Depends: nova-compute-kvm but it is not going to be installed or
                         nova-compute-hypervisor
E: Unable to correct problems, you have held broken packages.
root@server3:~# apt-get install nova-compute-kvm
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 nova-compute-kvm : Depends: nova-compute-libvirt (= 2:14.0.2-0ubuntu1~cloud0.1contrail) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.
root@server3