Use /usr/bin/env bash instead of /bin/bash (knative#2120)

Some systems may not have /bin/bash (NixOS for example)… Using
/usr/bin/env bash has the benefit of looking for whatever the
default version of the program is in your current environment.

Signed-off-by: Vincent Demeester <[email protected]>

Author: vdemeester

hack/deploy.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Knative Authors
 #

hack/release.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Knative Authors
 #

hack/update-codegen.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Knative Authors
 #

hack/update-deps.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Knative Authors
 #

hack/verify-codegen.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Knative Authors
 #

test/cluster.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Knative Authors
 #

test/e2e-tests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Knative Authors
 #

test/performance-tests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Knative Authors
 #

test/performance/observed-concurrency/run.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Knative Authors
 #

test/presubmit-tests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # Copyright 2018 The Knative Authors
 #

test/upload-test-images.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright 2018 The Knative Authors
 #