Updates to `promote_p_to_pe` role

.../roles/promote_p_to_pe/tasks/check_routing_instances.yaml

geant/gap_ansible/roles/promote_p_to_pe/tasks/compile.yaml

geant/gap_ansible/roles/promote_p_to_pe/tasks/deploy.yaml

geant/gap_ansible/roles/promote_p_to_pe/tasks/main.yml

..._ansible/roles/promote_p_to_pe/tasks/merge_variables.yaml

...les/promote_p_to_pe/templates/routers/nokia/filter_log.j2

...promote_p_to_pe/templates/routers/nokia/pe_base_config.j2

...s/promote_p_to_pe/templates/routers/nokia/pe_base_vprn.j2

...ates/routers/nokia/router/delete_default_static_routes.j2

...es/promote_p_to_pe/templates/routers/nokia/router/vprn.j2

...roles/promote_p_to_pe/templates/routers/nokia/sdp_mesh.j2

...s/promote_p_to_pe/templates/routers/nokia/service_vprn.j2

geant/gap_ansible/roles/promote_p_to_pe/vars/main.yml