[vlan] Bring up LAGs after shutdown them for vlan test configuration (#…

…835)

In vlan_configuration.yml, the LAGs are shutdown for loading
/etc/sonic/vlan_configuration.json. Need to bring them back after the
configuration is loaded. Otherwise, the LAGs will remain down and PTF
test would fail.

Signed-off-by: Xin Wang <xinw@mellanox.com>

ansible/roles/test/tasks/vlan_configure.yml

@@ -51,5 +51,14 @@
   shell: config load -y /etc/sonic/vlan_configuration.json
   become: true
 
+- name: sleep for some time
+  pause: seconds=30
+
+- name: Bring up LAGs
+  shell: ifconfig {{ item.attachto }} up
+  with_items:
+    - "{{ minigraph_portchannel_interfaces }}"
+  become: true
+
 - name: sleep for some time
   pause: seconds=10