Enable reserved variable name checks and fix violations (#12463)

* Enable reserved variable name checks and fix violations

Updated .ansible-lint configuration to skip only var-naming[pattern]
and var-naming[no-role-prefix] instead of skipping the entire var-naming rule.
This enables the check for reserved variable names.

Renamed variables that used reserved names to avoid conflicts.
Updated all references in tasks, variables, and templates.

Signed-off-by: Ali Afsharzadeh <afsharzadeh8@gmail.com>

* Rename namespace variable inside tasks instead of deleting it

Signed-off-by: Ali Afsharzadeh <afsharzadeh8@gmail.com>

* Change hosts variable to vm_hosts

Signed-off-by: Ali Afsharzadeh <afsharzadeh8@gmail.com>

* Use k8s_namespace instead of dashboard_namespace in dashboard.yml.j2 template

Signed-off-by: Ali Afsharzadeh <afsharzadeh8@gmail.com>

---------

Signed-off-by: Ali Afsharzadeh <afsharzadeh8@gmail.com>

roles/network_plugin/multus/tasks/main.yml

@@ -27,8 +27,8 @@
     - {name: multus-daemonset-crio, file: multus-daemonset-crio.yml, type: daemonset, engine: crio }
   register: multus_manifest_2
   vars:
-    query: "*|[?container_manager=='{{ container_manager }}']|[0].inventory_hostname"
-    vars_from_node: "{{ hostvars | json_query(query) }}"
+    host_query: "*|[?container_manager=='{{ container_manager }}']|[0].inventory_hostname"
+    vars_from_node: "{{ hostvars | json_query(host_query) }}"
   delegate_to: "{{ groups['kube_control_plane'][0] }}"
   when:
     - item.engine in container_manager_types