purefa_policy fails when management password policy lockout_duration is null

[Kainim]

Describe the bug

everpure.flasharray.purefa_policy fails when managing the built-in
FlashArray management password policy if the API returns
lockout_duration as null.

The module directly accesses pwd_policy.lockout_duration. With the
installed py-pure-client, a model field whose value is null raises
AttributeError, so the module fails before it can compare or apply the
requested policy configuration.

I assume this will also fail for other attributes returning null:

• enforce_dictionary_check
• enforce_username_check
• lockout_duration
• min_character_groups
• min_characters_per_group
• min_password_length

To Reproduce

1. Use a FlashArray that supports REST API 2.46.

2. Ensure the existing management password policy has lockout_duration
   unset.

3. Confirm the API response from:

   GET /api/2.46/policies/password?names=management
   

   contains:

   {
     "lockout_duration": null
   }

4. Run this task:

   - name: Configure management password policy
     everpure.flasharray.purefa_policy:
       name: management
       policy: password
       min_password_length: 14
       min_character_groups: 4
       min_characters_per_group: 1
       enforce_dictionary_check: true
       enforce_username_check: true
       password_history: 24
       max_login_attempts: 5
       lockout_duration: 900

5. Observe the failure:

   File ".../purefa_policy.py", line 2007, in update_policy
       "lockout_duration": pwd_policy.lockout_duration,
   AttributeError
   

Expected behavior

A missing or null lockout_duration should be treated as “not configured.”
The module should then compare it with the requested value and apply the
requested password-policy settings.

For example, the module should safely retrieve the value:

"lockout_duration": getattr(pwd_policy, "lockout_duration", None),

The same safe handling may be required for other nullable password-policy
fields accessed directly.

Screenshots

Not applicable. A sanitized raw JSON response and traceback can be attached if
useful.

Desktop

• OS: Linux
• Browser: Not applicable
• Version: Not applicable

Smartphone

Not applicable.

Additional context

• everpure.flasharray collection version: 1.44.0
• py-pure-client version: 1.90.0
• Python version: 3.14
• FlashArray REST API version: 2.46
• The collection's purefa_policy module currently declares password-policy
  support from REST API 2.34; password-policy management is documented as
  introduced in REST API 2.39.

Do not include API tokens, session tokens, or unredacted array identifiers in
any attached JSON or logs.