Add totem supplements to gstreamer1-plugin-openh264

As we are doing a build of openh264 anyway, move totem's 'Recommends:
gstreamer1-plugin-openh264' to here, using reverse weak dependencies.

This avoids having to reference another repo (fedora-cisco-openh264)
from the main package collection.

https://pagure.io/fedora-workstation/issue/84

openh264.spec

@@ -57,6 +57,7 @@ browsers.
 Version:        %{gst_version}
 Release:        2%{?dist}
 Summary:        GStreamer H.264 plugin
+Supplements:    totem%{?_isa}
 
 %description -n gstreamer1-plugin-openh264
 GStreamer is a streaming media framework, based on graphs of elements which
@@ -225,6 +226,7 @@ popd
 %changelog
 * Fri May 22 2020 Kalev Lember <klember@redhat.com> - 2.1.1-1
 - Update to 2.1.1
+- Add totem supplements to gstreamer1-plugin-openh264
 
 * Tue Mar 10 2020 Kalev Lember <klember@redhat.com> - 2.1.0-1
 - Update to 2.1.0