Adding tmt tier-0 test

Tests are run by packit through tmt in testsing-farm
Adding integration plan and tier-0 test verifying
initoverlayfs setup

Signed-off-by: Yariv Rachmani <[email protected]>

.fmf/version

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

.packit.yaml

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+---
+# See the documentation for more information:
+# https://packit.dev/docs/configuration/
+
+specfile_path: rpm/initoverlayfs.spec
+upstream_tag_template: v{version}
+
+srpm_build_deps:
+  - make
+
+jobs:
+  - job: tests
+    trigger: pull_request
+    identifier: integration-tiers
+    tmt_plan: /integration/plans/tier-0 
+    skip_build: true
+    targets:
+    targets:
+    - centos-stream-9-x86_64
+    - fedora-39-x86_64 

integration/plans/tier-0.fmf

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+summary: Tier 0 - initoverlayfs
+
+discover:
+    how: fmf
+    filter: tier:0
+
+provision:
+   how: local
+
+adjust:
+   prepare+:
+     - name: Prepare c9s Repo
+       how: shell
+       order: 10
+       script: |
+         dnf install -y  epel-release
+   when: distro == centos-stream-9
+
+prepare:
+     - name: Prepare Repos
+       how: shell
+       script: |
+          dnf copr enable -y @centos-automotive-sig/next
+     - name: Install rpms
+       how: install
+       package: initoverlayfs
+
+     - name: Verify rpm
+       how: shell
+       script: |
+          echo $(rpm -qa | grep -i initoverlayfs)
+
+execute:
+    how: tmt
+
+report:
+    how: junit
+

integration/tests/boot-validation/main.fmf

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+summary: test verify install is working
+test: ./test.sh
+tier: 0
+framework: shell
+

integration/tests/boot-validation/test.sh

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+#!/bin/bash
+
+if [ "${TMT_REBOOT_COUNT}" == "1" ];then
+   echo -n "machine is up"
+   exit 0
+   #echo -n "Verifying initoverlayfs in /boot"
+fi
+
+RPM_EXIST=$(rpm -qa | grep -i initoverlayfs)
+
+if [ -z "${RPM_EXIST}" ]; then
+   echo -n "initoverlayfs rpm is missing"
+   exit 127
+fi
+
+echo -n "Install initoverlayfs"
+/usr/bin/initoverlayfs-install
+
+exit_code="$?"
+
+if [ "$exit_code" != "0" ]; then
+   echo -n "initoverlayfs-install completeted with $exit_code"
+   exit "$exit_code"
+fi
+
+echo -n "Verifying initoverlayfs in /boot"
+du -sh /boot/init* | grep initoverlayfs
+
+exit_code="$?"
+if [ "$exit_code" != "0" ]; then
+   echo -n "initoverlayfs  not found under /boot please check runnin machine"
+   exit "$exit_code"
+fi
+
+/usr/local/bin/tmt-reboot
+