Bug 1527331 [wpt PR 15334] - Fix shebangs and executable bits for a bunch of files, a=testonly

Automatic update from web-platform-tests
Fix shebangs and executable bits for a bunch of files (#15334)

Mostly adding missing executable bits or removing unnecessary ones.
In a few cases, missing shebangs were added.
--

wpt-commits: bac4db35ea82fa0a6ee65e9291c722592e27fb7f
wpt-pr: 15334

testing/web-platform/tests/tools/ci/ci_built_diff.sh

@@ -1,3 +1,4 @@
+#!/bin/bash
 set -ex
 
 SCRIPT_DIR=$(cd $(dirname "$0") && pwd -P)

testing/web-platform/tests/tools/ci/ci_lint.sh

@@ -1,3 +1,4 @@
+#!/bin/bash
 set -ex
 
 SCRIPT_DIR=$(cd $(dirname "$0") && pwd -P)

testing/web-platform/tests/tools/ci/ci_manifest.sh

@@ -1,3 +1,4 @@
+#!/bin/bash
 set -ex
 
 SCRIPT_DIR=$(cd $(dirname "$0") && pwd -P)

testing/web-platform/tests/tools/ci/lib.sh

@@ -1,5 +1,3 @@
-#!/bin/bash
-
 hosts_fixup() {
     echo "travis_fold:start:hosts_fixup"
     echo "Rewriting hosts file"

testing/web-platform/tests/tools/docker/start.sh

@@ -1,3 +1,5 @@
+#!/bin/bash
+
 # This script is embedded in the docker image, and so the image must be updated when changes
 # to the script are made. To do this, assuming you have docker installed:
 # In tools/docker/ :
@@ -8,7 +10,6 @@
 # Update the `image` specified in the project's .taskcluster.yml file
 
 
-#!/bin/bash
 set -ex
 
 REMOTE=${1:-https://github.com/web-platform-tests/wpt}

testing/web-platform/tests/tools/pywebsocket/mod_pywebsocket/memorizingfile.py

@@ -1,5 +1,3 @@
-#!/usr/bin/env python
-#
 # Copyright 2011, Google Inc.
 # All rights reserved.
 #