Use tmt for gating

Plan taken from https://src.fedoraproject.org/rpms/python3.6/raw/f44/f/plan.fmf
modified:
- to use testrepo on gitlab.com
- drop marshalparser which isn't present for c8s

Co-authored-by: Miro Hrončok <miro@hroncok.cz>

.fmf/version

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

gating.yaml

@@ -1,6 +1,7 @@
 --- !Policy
+
 product_versions:
   - rhel-8
 decision_context: osci_compose_gate
 rules:
-  - !PassingTestCaseRule {test_case_name: baseos-ci.brew-build.tier1.functional}
+  - !PassingTestCaseRule {test_case_name: osci.brew-build.tier0.functional}

plan.fmf

@@ -0,0 +1,32 @@
+execute:
+  how: tmt
+
+environment:
+  pybasever: '3.6'
+
+discover:
+  - name: tests_python
+    how: shell
+    url: https://gitlab.com/redhat/centos-stream/tests/python.git
+    tests:
+    - name: smoke
+      path: /smoke
+      test: "VERSION=${pybasever} TOX=false CYTHON=false ./venv.sh"
+    - name: debugsmoke
+      path: /smoke
+      test: "PYTHON=/usr/libexec/platform-python${pybasever}dm VERSION=${pybasever} TOX=false CYTHON=false ./venv.sh"
+prepare:
+  - name: Install dependencies
+    how: install
+    package:
+    - python3
+    - platform-python-debug
+    - dnf  # for upgrade
+  - name: Update packages
+    how: shell
+    script: dnf upgrade -y
+  - name: rpm_qa
+    order: 100
+    how: shell
+    script: rpm -qa | sort | tee $TMT_PLAN_DATA/rpmqa.txt
+