Add spec lite to deprecate owner_is_tenant

The aim is to make owner_is_tenant == True as the only way to
configure Glance.

Change-Id: I6cff6282cb26f8d140a6fc9ff671e8bbdb35d019

1 files changed, 36 insertions, 0 deletions

diff --git a/specs/rocky/approved/glance/spec-lite-deprecate-owner_is_tenant.rst b/specs/rocky/approved/glance/spec-lite-deprecate-owner_is_tenant.rst
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+..
+ This work is licensed under a Creative Commons Attribution 3.0 Unported
+ License.
+
+ http://creativecommons.org/licenses/by/3.0/legalcode
+
+====================================
+Spec Lite: Deprecate owner_is_tenant
+====================================
+
+:project: glance
+
+:problem: The ``owner_is_tenant`` option, which is True by default, allows an
+          operator to run Glance in a nonstandard configuration where the
+          image owner is the *user* who created the image.  In all other
+          OpenStack services, resources are owned by the *project* (as
+          they are in Glance when the default setting is used).
+
+          A survey of operators conducted in March 2017 indicated that
+          no operators who responded (14) are using this option.  As it
+          is little used, results in a nonstandard OpenStack experience,
+          and complicates the Glance code, the option should be deprecated
+          in Rocky.  Following the standard `OpenStack deprecation policy`_,
+          it should be removed early in the 'S' cycle.
+
+          .. _`OpenStack deprecation policy`: https://governance.openstack.org/tc/reference/tags/assert_follows-standard-deprecation.html
+
+:solution: Use the oslo.config facilities to mark the option as deprecated.
+           As it appears that this option is used only in its default setting
+           of True, no migration path is proposed.
+
+:impacts: None
+
+:timeline: R-1
+
+:assignee: rosmaita