fix(role): Make config deletion more robust

We previously attempted to delete a file even if none was present.
This is now fixed.

tasks/base-package-auxiliary-settings-single-package-single-config.yml

@@ -31,7 +31,7 @@
     path: '{{ pkg.global_config_file }}'
 
 - name: 'Remove per-package config'
-  when: 'stat_result.pkg.name not in ansible_facts.packages'
+  when: 'stat_result.pkg.name not in ansible_facts.packages and stat_result.stat.exists'
   loop_control:
     loop_var: 'stat_result'
     label: 'If ''{{ stat_result.pkg.name }}'' package is absent and system-wide config file ''{{ stat_result.pkg.global_config_file }}'' is present remove config file'