kibana role broken with ansible 2.9

With ansible 2.9 the deployment fails when kibana is enabled.

What happened:
- Install ansible using `pip install ansible` now installs ansible 2.9
- Install kolla and kolla-ansible from git with stable/stein branch
- Execute `kolla-ansible -i ./multinode bootstrap-servers`
- Execute `kolla-ansible -i ./multinode prechecks`
- Execute `kolla-ansible -i ./multinode deploy`

Deployment fails in kibana role:
`fatal: [mlcopnstk01]: FAILED! => {"changed": false, "msg": "Unsupported parameters for (uri) module: HEADER_Content-Type Supported parameters include: attributes, backup, body, body_format, client_cert, client_key, content, creates, delimiter, dest, directory_mode, follow, follow_redirects, force, force_basic_auth, group, headers, http_agent, method, mode, owner, regexp, remote_src, removes, return_content, selevel, serole, setype, seuser, src, status_code, timeout, unix_socket, unsafe_writes, url, url_password, url_username, use_proxy, validate_certs"}`

This task causes the trouble:
`- name: Get kibana default indexes
  uri:
    HEADER_Content-Type: application/json
    url: "{{ internal_protocol }}://{{ kolla_internal_vip_address }}:{{ elasticsearch_port }}/.kibana"
    method: GET
  register: kibana_default_indexes
  run_once: true
  when: kibana_default_index is defined`

According to the ansible documentation, the HEADER_* parameters are no longer supported in ansible 2.9, see here: https://docs.ansible.com/ansible/2.8/modules/uri_module.html

What you expected to happen:
- Kibana should deploy without problems

**Environment**:
* OS: CentOS Linux release 7.7.1908
* Kernel (e.g. `uname -a`): 3.10.0-957.el7.x86_64
* Docker version if applicable (e.g. `docker version`): 19.03.4
* Kolla-Ansible version (e.g. `git head or tag or stable branch` or pip package version if using release): stable/stein
* Docker image Install type (source/binary): source
* Docker image distribution:
* Are you using official images from Docker Hub or self built? official images
* If self built - Kolla version and environment used to build:
* Share your inventory file, globals.yml and other configuration files if relevant