Fix build on platforms with bash not under /bin/

Not every platform has bash under /bin. For example, nixos keeps all
binaries under /nix/store and sets PATH accordingly to point to all of
them. In this environment, the right way to access bash is using
/usr/bin/env to locate shell. (The only shell guaranteed to exist at a
particular path on posix systems is /bin/sh.)

/usr/bin/env is always present on all systems so swapping direct call to
/bin/sh with `/usr/bin/env bash` should work everywhere.

cluster/build.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # This file is part of the KubeVirt project
 #

cluster/clean.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # This file is part of the KubeVirt project
 #

cluster/cli.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 source hack/common.sh

cluster/deploy.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # This file is part of the KubeVirt project
 #

cluster/down.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 source hack/common.sh
 source cluster/$KUBEVIRT_PROVIDER/provider.sh

cluster/ephemeral-provider-common.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

cluster/external/provider.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 function _kubectl() {
     kubectl "$@"

cluster/k8s-1.10.11/provider.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

cluster/k8s-1.11.0/provider.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

cluster/k8s-genie-1.11.1/provider.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

cluster/k8s-multus-1.13.3/provider.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

cluster/kubectl.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # This file is part of the KubeVirt project
 #

cluster/local/provider.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 function _cert_dir() {
     echo $GOPATH/src/kubevirt.io/kubevirt/cluster/local/certs

cluster/os-3.11.0-crio/provider.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

cluster/os-3.11.0-multus/provider.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

cluster/os-3.11.0/provider.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

cluster/up.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 source hack/common.sh
 source cluster/$KUBEVIRT_PROVIDER/provider.sh

cluster/virtctl.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # This file is part of the KubeVirt project
 #

hack/bazel-generate.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # remove libvirt BUILD file to regenerate it each time
 rm -f vendor/github.com/libvirt/libvirt-go/BUILD.bazel

hack/bootstrap-ginkgo.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

hack/build-copy-artifacts.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # This file is part of the KubeVirt project
 #

hack/build-docker.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # This file is part of the KubeVirt project
 #

hack/build-func-tests-container.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # This file is part of the KubeVirt project
 #

hack/build-func-tests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # This file is part of the KubeVirt project
 #

hack/build-go.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # This file is part of the KubeVirt project
 #

hack/build-manifests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # This file is part of the KubeVirt project
 #

hack/builder/build.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 SCRIPT_DIR="$(
     cd "$(dirname "$BASH_SOURCE[0]")"

hack/builder/entrypoint.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 set -o pipefail
 

hack/builder/publish.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 docker tag kubevirt/builder:28-5.0.0 docker.io/kubevirt/builder:28-5.0.0
 docker push docker.io/kubevirt/builder:28-5.0.0

hack/check.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 source hack/common.sh

hack/common.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 KUBEVIRT_DIR="$(
     cd "$(dirname "$BASH_SOURCE[0]")/../"

hack/coverage.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

hack/dep-prune.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 for file in $(find vendor/ -name "*_test.go"); do rm ${file}; done
 rm -rf vendor/github.com/golang/glog
 mkdir -p vendor/github.com/golang/

hack/dockerized

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 set -e
 
 source $(dirname "$0")/common.sh

hack/functests.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # This file is part of the KubeVirt project
 #

hack/gen-swagger-doc/gen-swagger-docs.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 # gen-swagger-docs.sh $API_VERSION $OUTPUT_FORMAT
 # API_VERSION=v1

hack/generate.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

hack/goveralls.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

hack/verify-build.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 set -e
 

hack/version.sh

@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 #
 # Copyright 2014 The Kubernetes Authors.
 #