Update generate_route_list to include -H flag dynamically

geant/gap_ansible/roles/po_prefix_lists/tasks/generate_route_list.yaml

 ---
-- name: Collect plain IPV{{ bgpq_query_type }} routes from {{ route_obj }}
-  when: partner.type in ['NREN']
-  ansible.builtin.command: "{{ bgpq_ver }} -j{{ bgpq_query_type }} {{ route_obj }}"
-  register: bgpq_routes_in_json
-  changed_when: true
-
 - name: Collect summarized IPV{{ bgpq_query_type }} routes from {{ route_obj }}
-  when: partner.type in ['RANDEPEER', 'RE']
-  ansible.builtin.command: "{{ bgpq_ver }} -{{ bgpq_agg_flag }} -j{{ bgpq_query_type }} {{ route_obj }}"
+  ansible.builtin.command: "{{ bgpq_ver }} {{ bgpq_agg_flag if partner.type in ['RE'] }} -j{{ bgpq_query_type }} {{ route_obj }}"
   register: bgpq_routes_in_json
   changed_when: true