tests/beakerlib: Add new test which covers sysctl options.

tests/beakerlib/Settings-in-usr-lib-sysctl-d-take-precedence-over/main.fmf

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+summary: Test for BZ#1759597 (Settings in /usr/lib/sysctl.d take precedence over)
+description: |
+    Bug summary: Settings in /usr/lib/sysctl.d take precedence over settings in tuned profiles in /etc/tuned.
+    Bugzilla link: https://bugzilla.redhat.com/show_bug.cgi?id=1759597
+contact: Robin Hack <[email protected]>
+component:
+  - tuned
+framework: beakerlib
+require:
+  - library(tuned/basic)
+recommend:
+  - tuned
+duration: 20m
+enabled: true
+tag:
+  - NoRHEL4
+  - NoRHEL5
+  - NoRHEL6
+  - NoRHEL7
+  - TIPpass_infra
+link:
+  - relates: https://bugzilla.redhat.com/show_bug.cgi?id=1759597
+  - relates: https://bugzilla.redhat.com/show_bug.cgi?id=1776149
+adjust:
+  - enabled: false
+    when: distro == rhel-4, rhel-5, rhel-6, rhel-7
+    continue: false
+  - enabled: false
+    when: distro ~< rhel-8.2
+    continue: false
+id: 1c91a928-72b9-407e-bf66-7a97025dc5cb

tests/beakerlib/Settings-in-usr-lib-sysctl-d-take-precedence-over/runtest.sh

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+#!/bin/bash
+# vim: dict+=/usr/share/beakerlib/dictionary.vim cpt=.,w,b,u,t,i,k
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#
+#   runtest.sh of /CoreOS/tuned/Regression/Settings-in-usr-lib-sysctl-d-take-precedence-over
+#   Description: Test for BZ#1759597 (Settings in /usr/lib/sysctl.d take precedence over)
+#   Author: Robin Hack <[email protected]>
+#
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+#
+#   Copyright Red Hat
+#
+#   SPDX-License-Identifier: GPL-2.0-or-later WITH GPL-CC-1.0
+#
+# ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+# Include Beaker environment
+. /usr/share/beakerlib/beakerlib.sh || exit 1
+
+PACKAGE="tuned"
+
+rlJournalStart
+    rlPhaseStartSetup
+        rlAssertRpm $PACKAGE
+        rlRun "TmpDir=\$(mktemp -d)" 0 "Creating tmp directory"
+        rlRun "pushd $TmpDir"
+        rlImport "tuned/basic"
+        tunedProfileBackup
+        rlServiceStart "tuned"
+
+        rlRun "ORIG_VAL=$(sysctl -n sysctl kernel.yama.ptrace_scope)"
+
+        rlAssertGrep "reapply_sysctl = 1" "/etc/tuned/tuned-main.conf"
+
+        rlRun "mkdir /etc/tuned/test-profile"
+        rlRun "pushd /etc/tuned/test-profile"
+        cat << EOF > tuned.conf
+[sysctl]
+kernel.yama.ptrace_scope=1
+EOF
+        rlRun "popd"
+    rlPhaseEnd
+
+    rlPhaseStartTest
+        rlRun "VAL_STATE=$(sysctl -n kernel.yama.ptrace_scope)"
+        rlAssertEquals "val should be 0" "$VAL_STATE" "0"
+
+        rlRun "tuned-adm profile test-profile"
+
+        rlRun "VAL_STATE=$(sysctl -n kernel.yama.ptrace_scope)"
+        rlAssertEquals "val should be 1" "$VAL_STATE" "1"
+    rlPhaseEnd
+
+    rlPhaseStartCleanup
+        rlFileRestore
+        tunedProfileRestore
+        rlServiceRestore "tuned"
+
+        rlRun "sysctl -w kernel.yama.ptrace_scope=$ORIG_VAL"
+        rlRun "rm -rf /etc/tuned/test-profile"
+    rlPhaseEnd
+rlJournalPrintText
+rlJournalEnd