ci: enable reverse-dependency testing in TF

Signed-off-by: Matej Focko <mfocko@redhat.com>

plans/packit-integration.fmf

@@ -0,0 +1,32 @@
+discover:
+    how: fmf
+    url: https://github.com/packit/packit
+    filter: tier:0 | tier:1
+
+prepare:
+  - how: install
+    copr: packit/packit-dev
+
+  # make sure the Copr repo has higher priority than TF Tag Repository
+  - how: shell
+    script: dnf -y config-manager --save --setopt="*:packit:packit-dev.priority=5"
+
+adjust:
+  - when: "how == integration"
+    because: "provide latest python-specfile rpm when running locally"
+    prepare+:
+      - name: python3-ogr rpm
+        how: install
+        directory: noarch/
+
+  - when: "distro == rhel-9 or distro == centos-9 or distro == centos-stream-9"
+    because: "deepdiff is not in EPEL 9: https://bugzilla.redhat.com/show_bug.cgi?id=2120251"
+    prepare+:
+      - how: install
+        package: python3-pip
+      - how: shell
+        script: pip3 install deepdiff
+
+  - when: "distro == rhel-8 or distro == centos-8 or distro == centos-stream-8"
+    because: "packit doesn't support EL 8"
+    enabled: false