Add a fix to enable passing empty cifmw_run_id

Author: frenzyfriday

roles/libvirt_manager/tasks/generate_networking_data.yml

@@ -38,10 +38,14 @@
     - name: Generate VM list
       vars:
         _run_id: >-
-          {%- if cifmw_architecture_scenario is defined and
-                 cifmw_architecture_scenario | length > 0   -%}
-          -{{ cifmw_run_id | lower }}
-          {%- endif                                         -%}
+          {{
+            '-' + (cifmw_run_id | lower)
+              if (
+                cifmw_architecture_scenario is defined and
+                cifmw_architecture_scenario | length > 0 and
+                cifmw_run_id | default('') | length > 0
+                ) else ''
+          }}
         vm_list: >-
           {% set _vm_list = {}                                      -%}
           {% set _range = []                                        -%}