Your Ansible version is lower than 2.5.0 (with ansible 2.10.2)

With azure.azure_preview_modules, 2.9.1 I get an error when I include the azure.azure_preview_modules role in my playbook:

```
TASK [azure.azure_preview_modules : debug] **************************************************************************************************************************************************************
ok: [localhost] => {
"msg": [
"Your Ansible version is lower than 2.5.0",
"You may need to perform additional steps to install this roles:",
" sudo pip install -r /home/howie/.ansible/roles/azure.azure_preview_modules/files/requirements-azure.txt",
"or",
" pip install --user -r /home/howie/.ansible/roles/azure.azure_preview_modules/files/requirements-azure.txt",
"depending on your ansible setup."
]
}

```

Thing is, (a) I just did install those requirements (in my Python 3.8.0 venv in case it's important) and (b) I have ansible 2.10.2 installed! (it also downgraded a bunch of azure sdk versions from the ones that ansible itself pulled in)

I was hoping to be able to use the azure_keyvault_secret lookup in a playbook...