* Remove misleading statement passwords must be same
Since 2.4 Ansible has supported multiple vault passwords:
<https://docs.ansible.com/ansible/latest/user_guide/vault.html#multiple-vault-passwords>
Meaning lines like the following are misleading:
> The password used with vault currently must be the same for all files you wish
> to use together at the same time.
-- `docs/docsite/rst/user_guide/vault.rst`
To demonstrate this with Ansible 2.7, save the following as `example.yaml`:
```
- name: Display output from two vaults with different passwords
hosts: localhost
connection: local
vars_files: [one.yaml, two.yaml]
tasks:
- name: View secret from one.yaml vault
debug: { var: one }
- name: View secret from two.yaml vault
debug: { var: two }
```
Then run the three following commands choosing two different passwords:
```
$ echo 'one: 1' | ansible-vault encrypt --vault-id id1@prompt --output=one.yaml
$ echo 'two: 2' | ansible-vault encrypt --vault-id id2@prompt --output=two.yaml
$ ansible-playbook --vault-id id1@prompt --vault-id id2@prompt example.yaml
```
`ansible-vault` stores an ID in plain text in the vault file.
* Remove note about default in Ansible 2.1
As requested by gundalow in https://github.com/ansible/ansible/pull/49798
7fbacf920d