BUG #16947: Missing signatures on some packages

The following bug has been logged on the website:

Bug reference: 16947
Logged by: Karsten Lenz
Email address: karsten(dot)lenz(at)dbi-services(dot)com
PostgreSQL version: 13.2
Operating system: SLES 15SP2
Description:

rpm -qa --qf '%{NAME}-%{VERSION}-%{RELEASE} (a)%{SIGPGP:pgpsig}
(b)%{SIGGPG:pgpsig}\n' | egrep "postgr|repmgr"
postgresql13-server-13.2-3.6.1 (a)RSA/SHA256, Thu Feb 11 12:44:54 2021, Key
ID 70af9e8139db7c82 (b)(none)
postgresql-13-4.7.1 (a)RSA/SHA256, Wed Jan 20 17:01:03 2021, Key ID
70af9e8139db7c82 (b)(none)
postgresql-contrib-13-4.7.1 (a)RSA/SHA256, Wed Jan 20 17:01:03 2021, Key ID
70af9e8139db7c82 (b)(none)
postgresql13-13.2-3.6.1 (a)RSA/SHA256, Thu Feb 11 12:44:53 2021, Key ID
70af9e8139db7c82 (b)(none)
postgresql13-contrib-13.2-3.6.1 (a)RSA/SHA256, Thu Feb 11 12:44:54 2021, Key
ID 70af9e8139db7c82 (b)(none)
postgresql-server-13-4.7.1 (a)RSA/SHA256, Wed Jan 20 17:01:03 2021, Key ID
70af9e8139db7c82 (b)(none)
repmgr_13-5.2.1-2.sles15 (a)(none) (b)(none)
pg_stat_kcache_13-2.2.0-1.sles15 (a)(none) (b)(none)