KAFKA-10018: Change command line tools from /bin/sh to /bin/bash (#8692)

Reviewers: Tom Bentley @tombentley, Boyang Chen <boyang@confluent.io>, Chia-Ping Tsai <chia7712@gmail.com>, Ismael Juma <ismael@confluent.io>, Colin P. McCabe <cmccabe@apache.org>, Matthias J. Sax <matthias@confluent.io>

bin/connect-distributed.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.

bin/connect-mirror-maker.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.

bin/connect-standalone.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.

bin/kafka-server-stop.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.

bin/trogdor.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.

bin/zookeeper-server-stop.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.

bin/zookeeper-shell.sh

@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/bash
 # Licensed to the Apache Software Foundation (ASF) under one or more
 # contributor license agreements.  See the NOTICE file distributed with
 # this work for additional information regarding copyright ownership.