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: I8595642bc07bf3044720942a0f1802448920cb50
diff --git a/.gitignore b/.gitignore
index cb3ffb3..a5393d9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -20,5 +20,6 @@
 host/simtrace2-list
 host/simtrace2-remsim
 host/simtrace2-remsim-usb2udp
+host/contrib/simtrace2.spec
 usb_strings_generated.h
 firmware/usbstring/usbstring