perf testsuite: Add test case for perf probe

Add new perf probe test case that acts as an entry element in perf test
list. Runs multiple subtests from directory "base_probe", which will be
added in incomming patches and can be expanded without further editing.

Signed-off-by: Veronika Molnarova <[e-mail]>
Signed-off-by: Michael Petlan <[e-mail]>
Cc: [e-mail]
Cc: [e-mail]
Signed-off-by: Namhyung Kim <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

tools/perf/tests/shell/perftool-testsuite_probe.sh

···
+#!/bin/bash
+# perftool-testsuite_probe
+# SPDX-License-Identifier: GPL-2.0
+
+test -d "$(dirname "$0")/base_probe" || exit 2
+cd "$(dirname "$0")/base_probe" || exit 2
+status=0
+
+PERFSUITE_RUN_DIR=$(mktemp -d /tmp/"$(basename "$0" .sh)".XXX)
+export PERFSUITE_RUN_DIR
+
+for testcase in setup.sh test_*; do                  # skip setup.sh if not present or not executable
+     test -x "$testcase" || continue
+     ./"$testcase"
+     (( status += $? ))
+done
+
+if ! [ "$PERFTEST_KEEP_LOGS" = "y" ]; then
+	rm -rf "$PERFSUITE_RUN_DIR"
+fi
+
+test $status -ne 0 && exit 1
+exit 0