给我编写一个ansible的role示例，把代码整理好

我可以帮你编写一个ansible role示例，下面是代码：---
- name: Ansible role example
hosts: all
tasks:
- name: Install common packages
package:
name:
- vim
- tree
- git
- unzip
- curl
- wget
- name: Create a directory
file:
path: /tmp/ansible
state: directory
owner: root
group: root
mode: 0775
- name: Copy files from src to dest
copy:
src: /src/files
dest: /tmp/ansible/
owner: root
group: root
mode: 0775
remote_src: yes
- name: Create a file
file:
path: /tmp/ansible/sample.txt
state: touch
owner: root
group: root
mode: 0644