[ci]: add -k ceos option to setup t0 testbed (#6565)

this is due to command line change in
sonic-net/sonic-mgmt@1e12790

this is due to command line change in
sonic-net/sonic-mgmt@1e12790

Signed-off-by: Guohan Lu <lguohan@gmail.com>

azure-pipelines.yml

@@ -157,7 +157,7 @@ stages:
         git reset --hard origin/master
         sed -i s/use_own_value/${username}/ ansible/veos_vtb
         echo aaa > ansible/password.txt
-        docker exec sonic-mgmt bash -c "pushd /data/sonic-mgmt/ansible;./testbed-cli.sh -d /data/sonic-vm -m $(inventory) -t $(testbed_file) refresh-dut $(tbname) password.txt" && sleep 180
+        docker exec sonic-mgmt bash -c "pushd /data/sonic-mgmt/ansible;./testbed-cli.sh -d /data/sonic-vm -m $(inventory) -t $(testbed_file) -k ceos refresh-dut $(tbname) password.txt" && sleep 180
       displayName: "Setup T0 testbed"
     - script: |
         pwd