Ansible-modules-hashivault

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- Strip whitespace from vault token file contents. [George Pchelkin]
- Add parameters to approle create role secret. [Terry Howe]
- Add parameters to approle create role. [Terry Howe]

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- TLS auth option [Christopher Valles]

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- Make key optional for lookup plugin [Marcin Wolny]

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- Mark ttl and max_ttl changed if parsed values differ. [Terry Howe]

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- Add change log and gitchangelog. [Terry Howe]

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- Test refactor. [Terry Howe]
- Amend the hashivault_policy_get to return a failure status when a
policy doesn't exist rather than a positive response with a Null set.
[Danny Webb]
- Fix secret list and isolate test. [Terry Howe]