* Move seal barrier type field from Access to autoSeal struct.
Remove method Access.SetType(), which was only being used by a single test, and
which can use the name option of NewTestSeal() to specify the type.
* Change method signatures of Access to match those of Wrapper.
* Turn seal.Access struct into an interface.
* Tweak Access implementation.
Change `access` struct to have a field of type wrapping.Wrapper, rather than
extending it.
* Add method Seal.GetShamirWrapper().
Add method Seal.GetShamirWrapper() for use by code that need to perform
Shamir-specific operations.
* OSS portion of wrapper-v2
* Prefetch barrier type to avoid encountering an error in the simple BarrierType() getter
* Rename the OveriddenType to WrapperType and use it for the barrier type prefetch
* Fix unit test
* Move the ctx capture outside the goroutine to avoid a race
* refactor the toggleable wrapper to avoid races
* Move the capture back outside the goroutine
* defer
Seal keys can be rotated. When this happens, the barrier and recovery
keys should be re-encrypted with the new seal key. This change
automatically re-encrypts the barrier and recovery keys with the latest
seal key on the active node during the 'postUnseal' phase.
* Add ability to migrate autoseal to autoseal
This adds the ability to migrate from shamir to autoseal, autoseal to
shamir, or autoseal to autoseal, by allowing multiple seal stanzas. A
disabled stanza will be used as the config being migrated from; this can
also be used to provide an unwrap seal on ent over multiple unseals.
A new test is added to ensure that autoseal to autoseal works as
expected.
* Fix test
* Provide default shamir info if not given in config
* Linting feedback
* Remove context var that isn't used
* Don't run auto unseal watcher when in migration, and move SetCores to SetSealsForMigration func
* Slight logic cleanup
* Fix test build and fix bug
* Updates
* remove GetRecoveryKey function
Victor Rodriguez