build(deps): bump github.com/hashicorp/vault/sdk from 0.9.1 to 0.9.2

[dependabot]

Bumps github.com/hashicorp/vault/sdk from 0.9.1 to 0.9.2.

Changelog

Sourced from github.com/hashicorp/vault/sdk's changelog.

0.9.2 (January 26th, 2018)

SECURITY:

• Okta Auth Backend: While the Okta auth backend was successfully verifying usernames and passwords, it was not checking the returned state of the account, so accounts that had been marked locked out could still be used to log in. Only accounts in SUCCESS or PASSWORD_WARN states are now allowed.
• Periodic Tokens: A regression in 0.9.1 meant that periodic tokens created by the AppRole, AWS, and Cert auth backends would expire when the max TTL for the backend/mount/system was hit instead of their stated behavior of living as long as they are renewed. This is now fixed; existing tokens do not have to be reissued as this was purely a regression in the renewal logic.
• Seal Wrapping: During certain replication states values written marked for seal wrapping may not be wrapped on the secondaries. This has been fixed, and existing values will be wrapped on next read or write. This does not affect the barrier keys.

DEPRECATIONS/CHANGES:

• sys/health DR Secondary Reporting: The replication_dr_secondary bool returned by sys/health could be misleading since it would be false both when a cluster was not a DR secondary but also when the node is a standby in the cluster and has not yet fully received state from the active node. This could cause health checks on LBs to decide that the node was acceptable for traffic even though DR secondaries cannot handle normal Vault traffic. (In other words, the bool could only convey "yes" or "no" but not "not sure yet".) This has been replaced by replication_dr_mode and replication_perf_mode which are string values that convey the current state of the node; a value of disabled indicates that replication is disabled or the state is still being discovered. As a result, an LB check can positively verify that the node is both not disabled and is not a DR secondary, and avoid sending traffic to it if either is true.
• PKI Secret Backend Roles parameter types: For ou and organization in role definitions in the PKI secret backend, input can now be a comma-separated string or an array of strings. Reading a role will now return arrays for these parameters.
• Plugin API Changes: The plugin API has been updated to utilize golang's context.Context package. Many function signatures now accept a context object as the first parameter. Existing plugins will need to pull in the latest Vault code and update their function signatures to begin using context and the new gRPC transport.

FEATURES:

• gRPC Backend Plugins: Backend plugins now use gRPC for transport, allowing them to be written in other languages.
• Brand New CLI: Vault has a brand new CLI interface that is significantly streamlined, supports autocomplete, and is almost entirely backwards compatible.

... (truncated)

Commits

• 3bf8733 Cut version 0.9.2
• d9eb24d Prep for 0.9.2
• 159bf65 Sync plugins
• a612abc Remove core restriction in cache and turn it into an active/standby restricti...
• 17e1b75 #3850 Fixed documentation for aws/sts ttl (#3851)
• 909b9ff Remove logical.Initialize() method (#3848)
• 2a04720 Update plugins
• 0ffbf40 changelog++
• 5f4ee04 auth/aws: Fix error with empty bound_iam_principal_arn (#3843)
• bcaa6e3 Fix intermittent panic by storing a reference to the grpc server (#3842)
• Additional commits viewable in compare view

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[alexhung]

This is blocked by this hashicorp/vault#18492 as we need to implement ExistenceCheck func for role path.

[dependabot]

Superseded by #123.