[BUG] CLNVUE OSPFv2 configuration fails in most test cases

[ipspace]

Relevant test results: https://tests.netlab.tools/_html/cumulus_nvue-libvirt-ospf-ospfv2

Sample config failure: https://tests.netlab.tools/cumulus_nvue/libvirt/ospf/ospfv2/01-network.yml-initial.log

Seems to be related to the attempt to add dictionaries introduced in #1560

Execution environment:

$ pip3 list | ack 'nsible|inja'
ansible                  10.6.0
ansible-core             2.17.6
ansible-pylibssh         1.1.0
Jinja2                   3.1.4
$ python3 --version
Python 3.10.12