Merge ~andrey-fedoseev/launchpad:db-snap-base-features into launchpad:db-devel

[Andrey Fedoseev]

Add `SnapBase.features` column

The column is used to designate the features available for a snap base

[Colin Watson (cjwatson)]

Needs a second DB review from William.

review: Approve (db)

[William Grant (wgrant)]

review: Approve (db)

diff --git a/database/schema/patch-2211-06-0.sql b/database/schema/patch-2211-06-0.sql
new file mode 100644
index 0000000..b58d4ea
--- /dev/null
+++ b/database/schema/patch-2211-06-0.sql
@@ -0,0 +1,13 @@
+-- Copyright 2022 Canonical Ltd.  This software is licensed under the
+-- GNU Affero General Public License version 3 (see the file LICENSE).
+
+SET client_min_messages=ERROR;
+
+ALTER TABLE SnapBase
+    ADD COLUMN features jsonb;
+;
+
+COMMENT ON COLUMN SnapBase.features
+    IS 'The features supported by this base.';
+
+INSERT INTO LaunchpadDatabaseRevision VALUES (2211, 06, 0);