testing-farm: install pre-release packages with Ansible

It's better to keep the test script focused on testing, not machine
preparation.

Author: praiskup

testing-farm/prepare/machine-prepare.yml

@@ -9,6 +9,7 @@
     test_user: single-host-testing
 
   roles:
+    - pre-release-packages
     - credentials
     - ca-trust
     - resalloc
@@ -35,15 +36,6 @@
       package:
         name:
           - git
-        state: latest
-
-    - name: print packit variable
-      ansible.builtin.debug:
-        msg: "$PACKIT_TARGET_SHA is '{{ lookup('ansible.builtin.env', 'PACKIT_TARGET_SHA') }}'"
-
-    - name: print packit variable
-      ansible.builtin.debug:
-        msg: "$PACKIT_PR_ID is '{{ lookup('ansible.builtin.env', 'PACKIT_PR_ID') }}'"
 
   tasks:
     - name: create a testing project

testing-farm/prepare/roles/pre-release-packages/tasks/main.yaml

@@ -0,0 +1,8 @@
+---
+- name: Install the script for pre-release package installation
+  ansible.builtin.template:
+    src: "{{ item }}.j2"
+    dest: /usr/local/bin/{{ item }}
+    mode: '0755'
+  loop:
+    - install-pre-release-packages

testing-farm/prepare/roles/pre-release-packages/templates/install-pre-release-packages.j2

@@ -0,0 +1,9 @@
+#! /bin/bash
+
+set -ex
+
+cd "{{ lookup('env', 'TMT_TREE') }}"
+cd "$(git rev-parse --show-toplevel)"
+
+packages=$(PYTHON_PKG_SUFFIX=3 ./releng/detect-changed-packages "$PACKIT_TARGET_SHA")
+./releng/install-copr-packages "@copr/copr-pull-requests:pr:$PACKIT_PR_ID" "$PACKIT_COMMIT_SHA" $packages

testing-farm/tests/sanity/test.sh

@@ -1,8 +1,6 @@
 #!/bin/sh -eux
 
 cd "$(git rev-parse --show-toplevel)"
-
-# Note:
-# https://gitlab.com/testing-farm/tests/-/issues/2
-packages=$(PYTHON_PKG_SUFFIX=3 ./releng/detect-changed-packages "$PACKIT_TARGET_SHA")
-./releng/install-copr-packages "@copr/copr-pull-requests:pr:$PACKIT_PR_ID" "$PACKIT_COMMIT_SHA" $packages
+rpm -qa
+env
+pwd