`iptrunk_migration` updates related to BFD

When iptrunk_type == Leased, update is needed to the BFD config on the remaining_side.

geant/gap_ansible/roles/iptrunk_migration/tasks/bfd_update.yaml

+---
+- name: Update Trunk interface BFD on  "{{ inventory_hostname }}" [CHECK ONLY][JUNIPER]
+  junipernetworks.junos.junos_config:
+    update: 'replace'
+    src: "/var/tmp/ansible_run_{{ opid }}/{{ config_object }}.conf"
+    src_format: set
+    check_commit: true
+  diff: true
+  when: >
+    verb == "update" and
+    remaining_side.vendor == "juniper" and
+    dry_run | ansible.builtin.bool
+
+- name: Update Trunk interface BFD on "{{ inventory_hostname }}" [AND COMMIT][JUNIPER]
+  junipernetworks.junos.junos_config:
+    update: 'replace'
+    src: "/var/tmp/ansible_run_{{ opid }}/{{ config_object }}.conf"
+    src_format: set
+    comment: "{{ commit_comment }}"
+  diff: true
+  when: >
+    verb == "update" and
+    remaining_side.vendor == "juniper" and
+    not (dry_run | ansible.builtin.bool)