Update intro_bsd.rst

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This implements solution #1 in the proposal ansible#14860.

It only shows the diff if the task induced a change, which means that if the changed_when control overrides the task, not diff will be produced.
See ansible#14860 for a rationale and the use-case.

formatting

Merge to latest upstream

* Add a vault 'encrypt_string' command.

The command will encrypt the string on the command
line and print out the yaml block that can be included
in a playbook.

To be prompted for a string to encrypt:
   
   ansible-vault encrypt_string --prompt

To specify a string on the command line:

   ansible-vault encrypt_string "some string to encrypt"

To read a string from stdin to encrypt:

   echo  "the plaintext to encrypt" | ansible-vault encrypt_string

If a --name or --stdin-name is provided, the output will include that name in yaml key value format: 

   $ ansible-vault encrypt_string "42" --name "the_answer"
    the_answer: !vault-encrypted |
          $ANSIBLE_VAULT;1.1;AES256
          <vault cipher text here>

plaintext provided via prompt, cli, and/or stdin can be mixed:

      $ ansible-vault encrypt_string "42" --name "the_answer" --prompt
      Vault password: 
      Variable name (enter for no name): some_variable
      String to encrypt: microfiber
      # The encrypted version of variable ("some_variable", the string #1 from the interactive prompt).
     some_variable: !vault-encrypted |
              $ANSIBLE_VAULT;1.1;AES256
              < vault cipher text here>
      # The encrypted version of variable ("the_answer", the string ansible#2 from the command line args).
      the_answer: !vault-encrypted |
             $ANSIBLE_VAULT;1.1;AES256
             < vault cipher text here>

Encryption successful
* add stdin and prompting to vault 'encrypt_string'
* add a --name to encrypt_string to optional specify a var name
* prompt for a var name to use with --prompt
* add a --stdin-name for the var name for value read from stdin

* Add Support of healthcheck in docker_container module

Fixes ansible#33622
Now container can be started with healthcheck enabled

Signed-off-by: Akshay Gaikwad <[email protected]>

* Extend docker_container healthcheck (#1)

* Allowing to disable healthcheck.

* Added test for healthcheck.

* Make sure correct types are used.

* Healthcheck needs to be explicitly disabled with test: ['NONE'].

* pep8 fixes

Signed-off-by: Akshay Gaikwad <[email protected]>

* Fix bug if healthcheck interval is 1 day or more

`timedelta` object has days too and seconds are up to one day.
Therefore use `total_seconds()` to convert time into seconds.

Signed-off-by: Akshay Gaikwad <[email protected]>

* Add test for healthcheck when healthcheck is not specified

This is to avoid the situation when healthcheck is not specified and
treat this as healthcheck is changed or removed.

Signed-off-by: Akshay Gaikwad <[email protected]>

* Convert string syntax for healthcheck test to CMD-SHELL

Also add another test case to check idempotency when healthcheck test
is specified as string

Signed-off-by: Akshay Gaikwad <[email protected]>

* Playbook fails if minimun docker version is not satisfy for healthcheck

This is to make more consistent with other non-supported options.

Signed-off-by: Akshay Gaikwad <[email protected]>