fix dnf system-upgrade from f29 to f29+

We need to obsolete anything < 11.  Obsoleting version < 10.5 was
incorrect, because we keep updating 10.5 to 10.6, etc.

Version: 11.2-2
Resolves: rhbz#1677849

libpq.spec

@@ -1,10 +1,9 @@
-%global obsoletes_version 10.5-4
 %global majorversion 11
 
 Summary: PostgreSQL client library
 Name: libpq
 Version: %majorversion.2
-Release: 1%{?dist}
+Release: 2%{?dist}
 
 License: PostgreSQL
 Url: http://www.postgresql.org/
@@ -27,7 +26,7 @@ BuildRequires: openldap-devel
 BuildRequires: gettext
 BuildRequires: multilib-rpm-config
 
-Obsoletes: postgresql-libs < %obsoletes_version
+Obsoletes: postgresql-libs < %majorversion
 Provides: postgresql-libs = %version-%release
 
 
@@ -46,7 +45,7 @@ Requires: %name%{?_isa} = %version-%release
 # most of the depending packages and the rest (those which want to build server
 # modules) need to be fixed to require postgresql-server-devel package.
 Provides: postgresql-devel = %version-%release
-Obsoletes: postgresql-devel < %obsoletes_version
+Obsoletes: postgresql-devel < %majorversion
 
 %description devel
 The libpq package provides the essential shared library for any PostgreSQL
@@ -128,6 +127,9 @@ find_lang_bins %name-devel.lst  pg_config
 
 
 %changelog
+* Mon Feb 18 2019 Pavel Raiskup <praiskup@redhat.com> - 11.2-2
+- fix dnf system-upgrade from f29 to f29+, rhbz#1677849
+
 * Thu Feb 14 2019 Pavel Raiskup <praiskup@redhat.com> - 11.2-1
 - latest upstream release, per release notes:
   https://www.postgresql.org/docs/11/static/release-11-1.html