tests: enable c10s gating

.fmf/version

@@ -0,0 +1 @@
+1

ci.fmf

@@ -0,0 +1 @@
+resultsdb-testcase: separate

gating.yaml

@@ -0,0 +1,6 @@
+--- !Policy
+product_versions:
+  - rhel-10
+decision_context: osci_compose_gate
+rules:
+  - !PassingTestCaseRule {test_case_name: osci.brew-build./plans/tier1-internal.functional}

plans/tier1-internal.fmf

@@ -0,0 +1,15 @@
+summary: Internal gating tests plan
+discover:
+  - name: Internal gating tests (gmp)
+    how: fmf
+    filter: 'tag: CI-Tier-1'
+    url: https://pkgs.devel.redhat.com/git/tests/gmp
+  - name: Internal gating tests (nettle)
+    how: fmf
+    filter: 'tag: CI-Tier-1 & component: gmp'
+    url: https://pkgs.devel.redhat.com/git/tests/nettle
+execute:
+    how: tmt
+adjust:
+    enabled: false
+    when: distro == centos-stream or distro == fedora