.: remove trailing white spaces

blame tibor this one ;-)
```
find . -type f -not -name '*.png' -not -name '*.go' -not -name '*.md'
-not -name '*.tar' -not -name '*.pem' -not -path './vendor/*' -not -path
'./.git/*' -not -path '*/testdata/*' -not -path './docs/*images*' -not
-path '*/testfiles/*' -not -path './bundles/*' -not -path
'./docs/*static*/*' -not -path './docs/*article-img/*' -exec grep -HnEl
'[[:space:]]$' {} \; | xargs sed -iE 's/[[:space:]]*$//'
```

Signed-off-by: Vincent Batts <vbatts@redhat.com>

hack/make/.validate

@@ -3,23 +3,23 @@
 if [ -z "$VALIDATE_UPSTREAM" ]; then
 	# this is kind of an expensive check, so let's not do this twice if we
 	# are running more than one validate bundlescript
-	
+
 	VALIDATE_REPO='https://github.com/docker/docker.git'
 	VALIDATE_BRANCH='master'
-	
+
 	if [ "$TRAVIS" = 'true' -a "$TRAVIS_PULL_REQUEST" != 'false' ]; then
 		VALIDATE_REPO="https://github.com/${TRAVIS_REPO_SLUG}.git"
 		VALIDATE_BRANCH="${TRAVIS_BRANCH}"
 	fi
-	
+
 	VALIDATE_HEAD="$(git rev-parse --verify HEAD)"
-	
+
 	git fetch -q "$VALIDATE_REPO" "refs/heads/$VALIDATE_BRANCH"
 	VALIDATE_UPSTREAM="$(git rev-parse --verify FETCH_HEAD)"
-	
+
 	VALIDATE_COMMIT_LOG="$VALIDATE_UPSTREAM..$VALIDATE_HEAD"
 	VALIDATE_COMMIT_DIFF="$VALIDATE_UPSTREAM...$VALIDATE_HEAD"
-	
+
 	validate_diff() {
 		if [ "$VALIDATE_UPSTREAM" != "$VALIDATE_HEAD" ]; then
 			git diff "$VALIDATE_COMMIT_DIFF" "$@"

hack/make/dynbinary

@@ -5,7 +5,7 @@ DEST=$1
 
 if [ -z "$DOCKER_CLIENTONLY" ]; then
 	source "$(dirname "$BASH_SOURCE")/.dockerinit"
-	
+
 	hash_files "$DEST/dockerinit-$VERSION"
 else
 	# DOCKER_CLIENTONLY must be truthy, so we don't need to bother with dockerinit :)

hack/make/dyngccgo

@@ -5,7 +5,7 @@ DEST=$1
 
 if [ -z "$DOCKER_CLIENTONLY" ]; then
 	source "$(dirname "$BASH_SOURCE")/.dockerinit-gccgo"
-	
+
 	hash_files "$DEST/dockerinit-$VERSION"
 else
 	# DOCKER_CLIENTONLY must be truthy, so we don't need to bother with dockerinit :)

hack/make/tgz

@@ -18,17 +18,17 @@ for d in "$CROSS/"*/*; do
 	BINARY_FULLNAME="$BINARY_NAME$BINARY_EXTENSION"
 	mkdir -p "$DEST/$GOOS/$GOARCH"
 	TGZ="$DEST/$GOOS/$GOARCH/$BINARY_NAME.tgz"
-	
+
 	mkdir -p "$DEST/build"
-	
+
 	mkdir -p "$DEST/build/usr/local/bin"
 	cp -L "$d/$BINARY_FULLNAME" "$DEST/build/usr/local/bin/docker$BINARY_EXTENSION"
-	
+
 	tar --numeric-owner --owner 0 -C "$DEST/build" -czf "$TGZ" usr
-	
+
 	hash_files "$TGZ"
-	
+
 	rm -rf "$DEST/build"
-	
+
 	echo "Created tgz: $TGZ"
 done

hack/vendor.sh

@@ -11,17 +11,17 @@ clone() {
 	vcs=$1
 	pkg=$2
 	rev=$3
-	
+
 	pkg_url=https://$pkg
 	target_dir=src/$pkg
-	
+
 	echo -n "$pkg @ $rev: "
-	
+
 	if [ -d $target_dir ]; then
 		echo -n 'rm old, '
 		rm -fr $target_dir
 	fi
-	
+
 	echo -n 'clone, '
 	case $vcs in
 		git)
@@ -32,10 +32,10 @@ clone() {
 			hg clone --quiet --updaterev $rev $pkg_url $target_dir
 			;;
 	esac
-	
+
 	echo -n 'rm VCS, '
 	( cd $target_dir && rm -rf .{git,hg} )
-	
+
 	echo done
 }