Refactor Ansible tasks to use fully qualified module names and improve code consistency

- Updated all tasks to use fully qualified module names (e.g., ansible.builtin.shell, ansible.builtin.copy) for clarity and to avoid ambiguity.
- Replaced deprecated 'yum' module with 'dnf' for package management on RedHat-based systems.
- Improved formatting and consistency in task definitions, including the use of double quotes for strings and consistent indentation.
- Removed unnecessary comments and whitespace to enhance readability.
- Ensured that conditions and loops are consistently formatted across all tasks.

roles/common/tasks/caching-nameserver.yml

@@ -1,12 +1,11 @@
 
 ---
-
 # ---
 # Install 'bind' apt based OS
 # ---
 
 - name: (caching-nameserver.yml) update
-  apt:
+  ansible.builtin.apt:
     update_cache: true
     cache_valid_time: "{{ 0 if apt_config_updated is defined and apt_config_updated.changed else apt_update_cache_valid_time }}"
   when:
@@ -26,9 +25,8 @@
   tags:
     - apt-caching-nameserver
 
-
 - name: (caching-nameserver.yml) upgrade
-  apt:
+  ansible.builtin.apt:
     upgrade: "{{ apt_upgrade_type }}"
     update_cache: true
     dpkg_options: "{{ apt_upgrade_dpkg_options | join(',') }}"
@@ -38,9 +36,8 @@
   tags:
     - apt-caching-nameserver
 
-
 - name: (caching-nameserver.yml) Install bind packages (using apt)
-  apt:
+  ansible.builtin.apt:
     name: "{{ apt_bind_pkgs }}"
     state: present
   when:
@@ -54,10 +51,10 @@
 # ---
 
 - name: (yum.yml) Install system updates for centos systems
-  yum:
-    name: '*'
+  ansible.builtin.dnf:
+    name: "*"
     state: latest
-    update_cache: yes
+    update_cache: true
     #cache_valid_time: 3600
   when:
     - ansible_facts.os_family == "RedHat"
@@ -66,7 +63,7 @@
     - yum-update
 
 - name: (yum.yml) Install bind packages (using yum)
-  yum:
+  ansible.builtin.dnf:
     name: "{{ yum_bind_pks }}"
     state: "{{ yum_install_state }}"
   when:
@@ -80,30 +77,29 @@
 # --
 
 - name: (caching-nameserver.yml) Create directory /var/log/named if it does not exist
-  file:
+  ansible.builtin.file:
     path: /var/log/named
     state: directory
     owner: bind
     group: bind
-    mode: '0755'
+    mode: "0755"
   when:
     - ansible_facts["distribution"] == "Debian"
 
-
 - name: (caching-nameserver.yml) update named.conf.options configuration file (normal server)
-  template:
+  ansible.builtin.template:
     src: etc/bind/named.conf.options.j2
     dest: /etc/bind/named.conf.options
-    backup: yes
+    backup: true
     owner: root
     group: bind
-    mode: 0644
+    mode: "0644"
     #validate: visudo -cf %s
   notify: Reload bind9
   tags:
     - apt-caching-nameserver
     - caching-nameserver
-  when: 
+  when:
     - ansible_facts["distribution"] == "Debian"
     - inventory_hostname not in groups["gateway_server"]
 
@@ -112,44 +108,42 @@
 # In case of gateway gateway servers ONLY if bind ption file NOT exists
 #
 - name: Check if file '/etc/bind/named.conf.options' exists
-  stat:
+  ansible.builtin.stat:
     path: /etc/bind/named.conf.options
   register: file_named_conf_options
 
 - name: (caching-nameserver.yml) update named.conf.options configuration file (gateway server)
-  template:
+  ansible.builtin.template:
     src: etc/bind/named.conf.options.gateway.j2
     dest: /etc/bind/named.conf.options
-    backup: yes
+    backup: true
     owner: root
     group: bind
-    mode: 0644
+    mode: "0644"
     #validate: visudo -cf %s
   notify: Reload bind9
   tags:
     - apt-caching-nameserver
     - caching-nameserver
-  when: 
+  when:
     - ansible_facts["distribution"] == "Debian"
     - inventory_hostname in groups["gateway_server"]
 #    - not file_named_conf_options.stat.exists
 
 # --------------------
 
-
 - name: (caching-nameserver.yml) Add 127.0.0.1 as first nameserver entry to /etc/resolv.conf
-  lineinfile:
+  ansible.builtin.lineinfile:
     path: /etc/resolv.conf
     line: nameserver 127.0.0.1
-    firstmatch: yes
-    insertbefore: '^nameserver'
+    firstmatch: true
+    insertbefore: "^nameserver"
     state: present
     owner: root
     group: root
-    mode: '0644'
+    mode: "0644"
   tags:
     - apt-caching-nameserver
-  when: 
+  when:
     - ansible_facts["distribution"] == "Debian"
     - not systemd_resolved
-