fix(contrib/util): use /usr/bin/env shebang for bash scripts

Author: manveru

contrib/util/_controller-reset-db.sh

@@ -1,4 +1,4 @@
-#!/bin/bash -e
+#!/usr/bin/env bash -e
 
 # This code is kept in a separate file from `reste-db.sh` for no other reason than to not have to deal
 # with the nightmare of double escaping all these commands through `vagrant ssh -c "\\\\\\\\\AGH!"`

contrib/util/add_server_dev_deps.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 cd /vagrant/contrib/vagrant/util/
 
 # Use the `coverage' command to signal whether the container has the dev dependencies

contrib/util/check-user-data.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 THIS_DIR=$(cd $(dirname $0); pwd) # absolute path
 CONTRIB_DIR=$(dirname $THIS_DIR)

contrib/util/generate-changelog.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 # vim: et tw=0 sw=4 ts=4
 
 usage() {