contrib: integrate RPM spec

Remove OpenSUSE bug report link, set version to 0.0.0, make it build with CentOS 8 etc.

Related: OS#4550
Change-Id: I7ac5f2c6bf11d88a3ebbc2f17d963d26f0b7de13
diff --git a/contrib/osmo-pcap.spec b/contrib/osmo-pcap.spec
index 9cbafbe..3049760 100644
--- a/contrib/osmo-pcap.spec
+++ b/contrib/osmo-pcap.spec
@@ -12,11 +12,8 @@
 # license that conforms to the Open Source Definition (Version 1.9)
 # published by the Open Source Initiative.
 
-# Please submit bugfixes or comments via http://bugs.opensuse.org/
-#
-
 Name:           osmo-pcap
-Version:        0.1.2.0
+Version:        0.0.0
 Release:        0
 Summary:        Osmocom's PCAP client and server
 License:        AGPL-3.0-or-later AND GPL-2.0-or-later
@@ -53,6 +50,7 @@
 %install
 %make_install
 
+%if 0%{?suse_version}
 %preun
 %service_del_preun osmo-pcap-client.service osmo-pcap-server.service
 
@@ -64,6 +62,7 @@
 
 %post
 %service_add_post osmo-pcap-client.service osmo-pcap-server.service
+%endif
 
 %check
 make %{?_smp_mflags} check || (find . -name testsuite.log -exec cat {} +)