* porting identity to OSS
* changes that glue things together
* add testing bits
* wrapped entity id
* fix mount error
* some more changes to core
* fix storagepacker tests
* fix some more tests
* fix mount tests
* fix http mount tests
* audit changes for identity
* remove upgrade structs on the oss side
* added go-memdb to vendor
* Store original request path in WrapInfo as CreationPath
* Add wrapping_token_creation_path to CLI output
* Add CreationPath to AuditResponseWrapInfo
* Fix tests
* Add and fix tests, update API docs with new sample responses
A change in copystructure has caused some panics due to the custom copy
function. I'm more nervous about production panics than I am about
keeping some bad code wiping out some existing warnings, so remove the
custom copy function and just allow direct setting of Warnings.
