Generic driver broken with glance enforcing RBAC defaults/scope

[Goutham Pacha Ravi]

Failure was observed in the CI since May 2023; when glance configuration in devstack was updated to enforce_scope and enforce_new_defaults by default: https://review.opendev.org/c/openstack/devstack/+/883601/

Steps to reproduce:

1) Create a devstack with the generic driver
2) Create share network, you could use the "private" network that's created by default on devstack
3) Create share with network

   openstack share create NFS 1 --share-type dhss_true --share-network share-net

You'll see the share transitions to "error" status. The generic driver fails to create a service VM (share server) for the share; the reason is because it is unable to list glance images:

Manila.conf: https://paste.openstack.org/show/bpJjDRpZZPPpq98NybCI/
Glance.conf: https://paste.openstack.org/show/blmcLnlaXWrQVjNXOv2F/
Generic driver manila share log: https://paste.openstack.org/show/bqMdG6TRkIfvhX4iQsOR/

[OpenStack Infra (hudson-openstack)]

Related fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/manila-tempest-plugin/+/891239

[Vida Haririan (vhariria)]

See additional related discussions at https://meetings.opendev.org/meetings/manila/2023/manila.2023-08-17-15.00.log.html

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/manila-tempest-plugin/+/891239
Committed: https://opendev.org/openstack/manila-tempest-plugin/commit/838733e183bc410b267a00eded2efd2cc2704225
Submitter: "Zuul (22348)"
Branch: master

commit 838733e183bc410b267a00eded2efd2cc2704225
Author: Goutham Pacha Ravi <email address hidden>
Date: Fri Aug 11 14:56:13 2023 -0700

    [CI] Disable glance RBAC enforcement in generic jobs

    We have a problem with glance's RBAC changes
    in the generic driver. Disable the enforcement temporarily
    while we explore a fix

    Related-Bug: #2031191
    Change-Id: Ia9c9eb4542c576e3e4d94334e62649abf3cb6faf
    Signed-off-by: Goutham Pacha Ravi <email address hidden>