refactor(standardize): remove redundant variables, deduplicate conditionals

roles/configuration/templates/network.j2

@@ -16,8 +16,6 @@ method=auto
 {% endif %}
 {% if idx | int == 0 and dns_list %}
 dns={{ dns_list | join(';') }}
-{% endif %}
-{% if idx | int == 0 and dns_list %}
 ignore-auto-dns=true
 {% endif %}
 {% if idx | int == 0 and search_list %}

roles/environment/tasks/main.yml

@@ -208,11 +208,6 @@
         - name: Configure RHEL Repos for installation
           when: is_rhel | bool
           block:
-            - name: Select repository template
-              ansible.builtin.set_fact:
-                environment_repo_template: "{{ os | lower }}"
-              changed_when: false
-
             - name: Create directories for repository files and RPM GPG keys
               ansible.builtin.file:
                 path: /etc/yum.repos.d
@@ -221,8 +216,8 @@
 
             - name: Create RHEL repository file
               ansible.builtin.template:
-                src: "{{ environment_repo_template }}.repo.j2"
-                dest: /etc/yum.repos.d/{{ environment_repo_template }}.repo
+                src: "{{ os }}.repo.j2"
+                dest: /etc/yum.repos.d/{{ os }}.repo
                 mode: "0644"
 
     - name: Check for third-party preparation tasks
@@ -252,9 +247,4 @@
       when:
         - thirdparty_preparation_tasks_path | length > 0
         - environment_thirdparty_tasks_stat.stat.exists
-      ansible.builtin.include_tasks: >-
-        {{
-          thirdparty_preparation_tasks_path
-          if thirdparty_preparation_tasks_path | regex_search('^/')
-          else playbook_dir + '/' + thirdparty_preparation_tasks_path
-        }}
+      ansible.builtin.include_tasks: "{{ environment_thirdparty_tasks_path }}"

roles/global_defaults/tasks/system.yml

@@ -3,7 +3,6 @@
   ansible.builtin.set_fact:
     system: "{{ system | default({}) }}"
 
-
 - name: Validate system input types
   ansible.builtin.assert:
     that: