[ansible/fanout_connect.yml] Support the deployment of Spytest

Modified `rootfanout_connect.yml` to support assigning vlans from
multiple DUTs to the root fanout trunk port that is connected to the
vm server.

Signed-off-by: Longxiang Lyu <[email protected]>

Author: lolyu

ansible/roles/fanout/tasks/rootfanout_connect.yml

@@ -12,6 +12,14 @@
   delegate_to: localhost
   tags: always
   register: devinfo
+  when: dut.split(',')|length == 1
+
+- name: Gathering connection facts about the DUTs or leaffanout device
+  conn_graph_facts: hosts={{ dut.split(',') }}
+  delegate_to: localhost
+  tags: always
+  register: devinfo
+  when: dut.split(',')|length > 1
 
 - name: Gathering connection facts about the lab
   conn_graph_facts:
@@ -20,7 +28,7 @@
   register: lab
 
 - set_fact:
-    dev_vlans: "{{ devinfo.ansible_facts.device_vlan_range }}"
+    dev_vlans: "{{ devinfo.ansible_facts.device_vlan_range|flatten(levels=1) }}"
     lab_devices: "{{ lab.ansible_facts.device_info }}"
 
 - name: Find the root fanout switch