* add aliasmetadata sdk helper and add to aws auth
* split into ec2_metadata and iam_metadata fields
* fix tests
* strip pointer
* add test of default metadata
* more test <3
* switch from interface to custom marshallers
* add tests for marshalling
* store nil when selected fields are default
* separate loop into pieces
* separate acc test into multiple
* Update builtin/credential/aws/path_login.go
Co-Authored-By: Jim Kalafut <jkalafut@hashicorp.com>
* changes from feedback
* update aws test
* refactor to also populate auth metadata
* update how jsonification is tested
* only add populated metadata values
* add auth_type to ec2 logins
Co-authored-by: Jim Kalafut <jkalafut@hashicorp.com>
* auth/aws: Make identity alias configurable
This is inspired by #4178, though not quite exactly what is requested
there. Rather than just use RoleSessionName as the Identity alias, the
full ARN is uses as the Alias. This mitigates against concerns that an
AWS role with an insufficiently secured trust policy could allow an
attacker to generate arbitrary RoleSessionNames in AssumeRole calls to
impersonate anybody in the Identity store that had an alias set up.
By using the full ARN, the owner of the identity store has to explicitly
trust specific AWS roles in specific AWS accounts to generate an
appropriate RoleSessionName to map back to an identity.
Fixes#4178
* Respond to PR feedback
* Remove CreateOperation
Response to PR feedback
