Unable to load filter_plugin inside tests

[Roshna-Raman]

I m not able to load filter_plugins in tests without specifying filter plugin explicitly inside ansible.cfg.
https://github.com/Roshna-Raman/cisco_ios/tree/remotes/origin/f/parser_show_ip_route

$ ansible --version
ansible 2.7.5

Fail Log:
cisco_ios/tests/parser_templates/cli/show_ip_route_vrf_all/main.yaml:3
Wednesday 23 January 2019 22:16:09 +1000 (0:00:00.024) 0:00:00.062 *****
fatal: [localhost]: FAILED! =>
msg: 'template error while templating string: no filter named ''expand_routing_protocol_name''. String: {{ { nested_item.prefix+nested_item.mask: { ''subnet'': nested_item.prefix, ''mask'': nested_item.mask, ''protocol'': nested_item.prot | expand_routing_protocol_name, ''dist_metric'': nested_item.metric, ''next_hop'': ([nested_item.next_hop_nbr]+[nested_item.next_hop_int, nested_item.next_hop_int_sum]) | reject(''equalto'', '''') | list } } }}'
to retry, use: --limit @/home/4039467/work/cisco_ios/tests/test_parser_templates.retry

If I add 'filter_plugins = filter_plugins' in ansible.cfg, I get the expected result without any failures.
Please suggest if it is required to mention filter_plugins explicitly, as my understanding is that it should be taken care without the need to mention in ansible.cfg.

[rcarrillocruz]

Can you please share the playbook you are using and how you are running ansible-playbook?

[Roshna-Raman]

HI,
I am executing palybook from cisco-ios as 'ansible-playbook tests/test_parser_templates.yaml -i inventory -vvv'