v3 API doc: credentials blob content should be JSON-in-a-string instead of actual JSON

[Darren Hague]

The OpenStack Identity v3 API documentation (http://developer.openstack.org/api-ref-identity-v3.html) has incorrect examples of how to format EC2 credentials.

The documentation says to use
  blob: { "access":"--access key--", "secret":"--secret key--"}
but Keystone rejects this with a 400 error.

The value of blob must actually be a string value, and the JSON for access & secret keys is encoded within this string:
  "blob": "{\"access\":\"--access-key--\",\"secret\":\"--secret-key--\"}"

[Darren Hague (dhague)]

Fix is submitted for review: https://review.openstack.org/#/c/149330/

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/149330
Committed: https://git.openstack.org/cgit/openstack/api-site/commit/?id=dd38f4b31b1e1fada0f64bba5ea4a192914f6769
Submitter: Jenkins
Branch: master

commit dd38f4b31b1e1fada0f64bba5ea4a192914f6769
Author: Darren Hague <email address hidden>
Date: Thu Jan 22 15:36:08 2015 +0000

    credentials blob content corrected to be JSON-in-a-string

    Corrected the JSON examples for the Identity /v3/credentials endpoint
    and updated the explanatory text accordingly.

    Change-Id: I2931c21d0460a644eb421ebfdc5d1626d20d6618
    Closes-Bug: 1413627