Merge ~andrey-fedoseev/launchpad:db-cve-discovered-by into launchpad:db-devel

[Andrey Fedoseev]

Add `Cve.discovered_by` column

It contains the name of person(s) or organization that discovered the CVE

This supersedes the existing `discoverer` column which is a reference to a `Person`

[Colin Watson (cjwatson)]

Adding William for a second DB review.

review: Approve (db)

[William Grant (wgrant)]

review: Approve (db)

diff --git a/database/schema/patch-2211-07-0.sql b/database/schema/patch-2211-07-0.sql
new file mode 100644
index 0000000..1cbcad4
--- /dev/null
+++ b/database/schema/patch-2211-07-0.sql
@@ -0,0 +1,12 @@
+-- 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 Cve
+    ADD COLUMN discovered_by text;
+
+COMMENT ON COLUMN Cve.discovered_by
+    IS 'The name of person(s) or organization that discovered the CVE';
+
+INSERT INTO LaunchpadDatabaseRevision VALUES (2211, 07, 0);