Update the ci gating setup

plans/ci.fmf

@@ -1,10 +1,9 @@
 summary: CI Gating Plan
 discover:
     how: fmf
-    url: https://src.fedoraproject.org/rpms/systemtap.git
+    url: https://gitlab.cee.redhat.com/toolchain-qe/tests/systemtap-gating.git
-    ref: rawhide
+    ref: main
     directory: tests
-    filter: 'tier: 1'
 prepare:
     - name: prepare
       how: shell