Creating an identity on a aws kms vault fails

[polvorin]

Observed behavior

Is not possible to create an identity backed up by an aws kms vault.

The problem arise when the command must create the key on aws, it do work if one creates the key manually (asymmetric, ECC_NIST_P256), and then explicitly use it on the identity create  command

Steps to reproduce

1. ockam reset -y
2. ockam vault create aws --aws-kms
3. ockam identity create

The above should create a new identity, with the root key stored on aws kms. But it fails with
invalid key type (origin: Vault, kind: Misuse, [...]

Desired behavior

A key must be created on aws kms, and used as the root key for the identity

Ockam Version

v0.117.0