tests: migrate to tmt plans

ci.fmf

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

gating.yaml

@@ -3,5 +3,4 @@ product_versions:
   - rhel-8
 decision_context: osci_compose_gate
 rules:
-  - !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}
-  - !PassingTestCaseRule {test_case_name: baseos-ci.brew-build.tier1.functional}
+  - !PassingTestCaseRule {test_case_name: osci.brew-build./plans/tier1-internal.functional}

plans/shell.fmf

@@ -1,14 +0,0 @@
-summary:
-    Run relevant tests from the shell tests repository
-discover:
-    how: fmf
-    url: https://src.fedoraproject.org/tests/shell
-    filter: component:zsh
-prepare:
-    how: install
-    package: zsh
-execute:
-    how: tmt
-environment:
-    PACKAGES: zsh
-    SH_BIN: zsh

plans/tier1-internal.fmf

@@ -0,0 +1,22 @@
+summary: Internal gating tests plan
+discover:
+  - how: fmf
+    filter: 'tag: CI-Tier-1 & component: zsh'
+    url: https://pkgs.devel.redhat.com/git/tests/bash
+  - how: fmf
+    filter: 'tag: CI-Tier-1 & component: zsh'
+    url: https://pkgs.devel.redhat.com/git/tests/dash
+  - how: fmf
+    filter: 'tag: CI-Tier-1 & component: zsh'
+    url: https://pkgs.devel.redhat.com/git/tests/ksh
+  - how: fmf
+    filter: 'tag: CI-Tier-1 & component: zsh'
+    url: https://pkgs.devel.redhat.com/git/tests/mksh
+  - how: fmf
+    filter: 'tag: CI-Tier-1 & component: zsh'
+    url: https://pkgs.devel.redhat.com/git/tests/zsh
+execute:
+    how: tmt
+adjust:
+    enabled: false
+    when: distro == centos-stream or distro == fedora