Ansible sub tasks in main tasks - ansible

Question

I want to have 2 "sub tasks" in a main task, but for some reason I am getting a syntax error.
In my /etc/ansible directory I have to following structure:
playbooks/
set_users.yml
roles/
users/
tasks/
main.yml
create_admin.yml
update_root.yml
vars/
main.yml
In the create_admin.yml file I have the following:
---
- name: Create srv_admin user
user: name=srv_admin password="{{ admin_password }}" groups=wheel shell=/bin/bash
And in update_root.yml:
---
- name Update root password
user: name=root password="{{ root_password }}"
Then I include these tasks in main.yml:
---
- name: Modify users
tasks:
- include: update_root.yml
- include: create_admin.yml
My vars/main.yml contains my passwords:
---
admin_password: SHA512HASH
root_password: SHA512HAS
Now bringing it all together in playbooks/set_users.yml:
---
- name: create user
hosts: servers
remote_user: root
roles:
- users
But I am obviously doing something wrong. When I run the playbook, I get the following error:
ERROR! no action detected in task. This often indicates a misspelled module name, or incorrect module path.
The error appears to have been in '/etc/ansible/roles/users/tasks/main.yml': line 2, column 3, but may
be elsewhere in the file depending on the exact syntax problem.
The offending line appears to be:
---
- name: Modify users
^ here
How can I use these two "sub" tasks in tasks/main.yml so that I can simply import the role in the playbook?
EDIT
After implementing #Konstantin Suvorov suggestion:
The error appears to have been in '/etc/ansible/roles/users/tasks/update_root.yml': line 3, column 7, but may
be elsewhere in the file depending on the exact syntax problem.
The offending line appears to be:
- name Update root password
user: name=root password="{{ root_password }}"
^ here
We could be wrong, but this one looks like it might be an issue with
missing quotes. Always quote template expression brackets when they
start a value. For instance:
with_items:
- {{ foo }}
Should be written as:
with_items:
- "{{ foo }}"

Answer 1

tasks/main.yml should be a list of tasks, so no need in tasks: keyword:
---
- include: update_root.yml
- include: create_admin.yml
And avoid using key=value syntax, it'll shoot in the leg sometime, use pure YAML:
- name: Update root password
user:
name: root
password: "{{ root_password }}"