add access_key to share_access_map

For backends with internal authentication system,
e.g. Ceph, that return ``access_key`` (credential) for
client identities that are granted share access:

* Retrieve ``access_key`` as return value of driver's
  update_access()

* Store ``access_key`` in ShareAccessMapping model

* Expose it in access_list API

APIImpact

DocImpact

Partially implements bp auth-access-keys

Co-Authored-By: John Spray <jspray@redhat.com>

Change-Id: I486064f117cf3001dba7735ca92a7d89aee3ce5b
2 files changed
tree: 8121e2ed7728844bc132840ecc847486094f3f3b
  1. manila_tempest_tests/