Fix the issue introduced by the PR #16716 (#17516)

Description of PR
Summary: After the #16716 merged, the remove topo failed. fix it in this PR
Fixes # (issue)

Approach
What is the motivation for this PR?
How did you do it?
How did you verify/test it?
Deploy the setup could pass with the fix

co-authorized by: jianquanye@microsoft.com

Author: nhe-NV

ansible/roles/vm_set/tasks/get_dut_port.yml

@@ -54,6 +54,6 @@
 
 - set_fact:
     duts_fp_ports: "{{ duts_fp_ports|default({}) | combine( { dut_name: dut_fp_ports } ) }}"
-    duts_midplane_ports: "{{ duts_midplane_ports|default({}) | combine( { dut_name: dut_midplane_ports } ) }}"
-    duts_inband_ports: "{{ duts_inband_ports|default({}) | combine( { dut_name: dut_inband_ports } ) }}"
+    duts_midplane_ports: "{{ duts_midplane_ports|default({}) | combine( { dut_name: dut_midplane_ports|default([]) } ) }}"
+    duts_inband_ports: "{{ duts_inband_ports|default({}) | combine( { dut_name: dut_inband_ports|default([]) } ) }}"
     duts_mgmt_port: "{{ duts_mgmt_port|default([]) + [ dut_mgmt_port ] }}"