"int object is not iterable" when using numerical group names

[Mohammed Naser]

When using federation and having the values of `groups` in the mapping set to a number, it will be parsed into a a number and then fail to authenticate:

```
{"error":{"code":400,"message":"'int' object is not iterable","title":"Bad Request"}}
```

I believe the bad bit is here:

https://github.com/openstack/keystone/blob/326b014434cc760ba08763e1870ac057f7917e98/keystone/federation/utils.py#L650-L661

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/keystone/+/860726

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/keystone/+/860726
Committed: https://opendev.org/openstack/keystone/commit/c70d0c33a5977ca7208fbadd876a646cd37ffb31
Submitter: "Zuul (22348)"
Branch: master

commit c70d0c33a5977ca7208fbadd876a646cd37ffb31
Author: Mohammed Naser <email address hidden>
Date: Fri Oct 7 17:06:12 2022 +0000

    fix(federation): allow using numerical group names

    When using a numerical group name, the current codebase which
    relies on ast.literal_eval does not account for the value
    being a number. Therefore, it can be parsed as a number and
    fail in further steps since it will not be a list.

    This patch adds a test to handle that use case and refactor the
    code that leverages ast.literal_eval to be the same everywhere
    so that it adds that fix everywhere.

    Closes-Bug: #1992186
    Change-Id: I665b7e0234650ba07e0d030a2d442d6599d0888a

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/2023.1
Review: https://review.opendev.org/c/openstack/keystone/+/890481

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/zed
Review: https://review.opendev.org/c/openstack/keystone/+/890482

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/keystone/+/890481
Committed: https://opendev.org/openstack/keystone/commit/db16a3f8c1c82e3f70648e48ac54d88663b78a73
Submitter: "Zuul (22348)"
Branch: stable/2023.1

commit db16a3f8c1c82e3f70648e48ac54d88663b78a73
Author: Mohammed Naser <email address hidden>
Date: Fri Oct 7 17:06:12 2022 +0000

    fix(federation): allow using numerical group names

    When using a numerical group name, the current codebase which
    relies on ast.literal_eval does not account for the value
    being a number. Therefore, it can be parsed as a number and
    fail in further steps since it will not be a list.

    This patch adds a test to handle that use case and refactor the
    code that leverages ast.literal_eval to be the same everywhere
    so that it adds that fix everywhere.

    Closes-Bug: #1992186
    Change-Id: I665b7e0234650ba07e0d030a2d442d6599d0888a
    (cherry picked from commit c70d0c33a5977ca7208fbadd876a646cd37ffb31)

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/keystone/+/890482
Committed: https://opendev.org/openstack/keystone/commit/a62c18ec68aaa96586c3d8a23f6217bc911f511c
Submitter: "Zuul (22348)"
Branch: stable/zed

commit a62c18ec68aaa96586c3d8a23f6217bc911f511c
Author: Mohammed Naser <email address hidden>
Date: Fri Oct 7 17:06:12 2022 +0000

    fix(federation): allow using numerical group names

    When using a numerical group name, the current codebase which
    relies on ast.literal_eval does not account for the value
    being a number. Therefore, it can be parsed as a number and
    fail in further steps since it will not be a list.

    This patch adds a test to handle that use case and refactor the
    code that leverages ast.literal_eval to be the same everywhere
    so that it adds that fix everywhere.

    Closes-Bug: #1992186
    Change-Id: I665b7e0234650ba07e0d030a2d442d6599d0888a
    (cherry picked from commit c70d0c33a5977ca7208fbadd876a646cd37ffb31)

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/keystone 24.0.0.0rc1 release candidate.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/keystone 23.0.1 release.

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/keystone 22.0.1 release.