valgrind/oprofile/systemd: no bashism in run-ptest

There is no bashism in the scripts, so use /bin/sh, and add /bin/sh
interpreter for systemd's run-ptest.

(From OE-Core rev: 62d455f89fb1d2c22cf987bdbb56a55e6d031ce0)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-core/systemd/systemd/run-ptest

@@ -1,3 +1,5 @@
+#!/bin/sh
+
 tar -C test -xJf test/sys.tar.xz
 make test/rules-test.sh.log
 make test/udev-test.pl.log

meta/recipes-devtools/valgrind/valgrind/run-ptest

@@ -1,4 +1,5 @@
-#!/bin/bash
+#!/bin/sh
+
 # run-ptest - 'ptest' test infrastructure shell script that
 #   wraps the valgrind regression script vg_regtest. 
 #   Must be run in the /usr/lib/valgrind/ptest directory. 

meta/recipes-kernel/oprofile/oprofile/run-ptest

@@ -1,4 +1,5 @@
-#!/bin/bash
+#!/bin/sh
+
 saved_dir=$PWD
 for dir in */tests ; do
 	cd $dir