don't depend on packages not available in the default centos7 repos

git-svn-id: https://xpra.org/svn/Xpra/trunk@17394 3bb7dfac-3a0b-4e04-842a-767bc560f471

rpmbuild/xpra.spec

@@ -193,14 +193,16 @@ This package contains the python2 common build of xpra.
 Summary:			python2 build of xpra audio support
 Group:				Networking
 Requires:			python2-xpra = %{version}-%{build_no}%{dist}
+%if 0%{?fedora}
 #EL7 requires 3rd party repos like "media.librelamp.com"
-Requires:			python-gstreamer1
+Requires:			python2-gstreamer1
+Recommends:			gstreamer1-plugins-ugly
+Recommends:			gstreamer1-plugins-ugly-free
+%endif
 Requires:			gstreamer1
 Requires:			gstreamer1-plugins-base
 Requires:			gstreamer1-plugins-good
 %{Recommends}:		gstreamer1-plugin-timestamp
-%{Recommends}:		gstreamer1-plugins-ugly
-%{Recommends}:		gstreamer1-plugins-ugly-free
 %{Recommends}:		pulseaudio
 %{Recommends}:		pulseaudio-utils
 %description -n python2-xpra-audio