Update c/image to v4.0.1 and buildah to 1.11.3

This requires updating all import paths throughout, and a matching
buildah update to interoperate.

I can't figure out the reason for go.mod tracking
	github.com/containers/image v3.0.2+incompatible // indirect
((go mod graph) lists it as a direct dependency of libpod, but
(go list -json -m all) lists it as an indirect dependency),
but at least looking at the vendor subdirectory, it doesn't seem
to be actually used in the built binaries.

Signed-off-by: Miloslav Trmač <mitr@redhat.com>

vendor/github.com/mattn/go-shellwords/.travis.yml

@@ -1,8 +1,14 @@
 language: go
+sudo: false
 go:
   - tip
+
 before_install:
-  - go get github.com/mattn/goveralls
-  - go get golang.org/x/tools/cmd/cover
+  - go get -t -v ./...
+
 script:
-    - $HOME/gopath/bin/goveralls -repotoken 2FMhp57u8LcstKL9B190fLTcEnBtAAiEL
+  - ./go.test.sh
+
+after_success:
+  - bash <(curl -s https://codecov.io/bash)
+

vendor/github.com/mattn/go-shellwords/README.md

@@ -1,6 +1,6 @@
 # go-shellwords
 
-[![Coverage Status](https://coveralls.io/repos/mattn/go-shellwords/badge.png?branch=master)](https://coveralls.io/r/mattn/go-shellwords?branch=master)
+[![codecov](https://codecov.io/gh/mattn/go-shellwords/branch/master/graph/badge.svg)](https://codecov.io/gh/mattn/go-shellwords)
 [![Build Status](https://travis-ci.org/mattn/go-shellwords.svg?branch=master)](https://travis-ci.org/mattn/go-shellwords)
 
 Parse line as shell words.

vendor/github.com/mattn/go-shellwords/go.test.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+set -e
+echo "" > coverage.txt
+
+for d in $(go list ./... | grep -v vendor); do
+    go test -coverprofile=profile.out -covermode=atomic "$d"
+    if [ -f profile.out ]; then
+        cat profile.out >> coverage.txt
+        rm profile.out
+    fi
+done

vendor/github.com/mattn/go-shellwords/shellwords.go

@@ -40,6 +40,7 @@ type Parser struct {
 	ParseEnv      bool
 	ParseBacktick bool
 	Position      int
+	Dir           string
 
 	// If ParseEnv is true, use this for getenv.
 	// If nil, use os.Getenv.
@@ -51,6 +52,7 @@ func NewParser() *Parser {
 		ParseEnv:      ParseEnv,
 		ParseBacktick: ParseBacktick,
 		Position:      0,
+		Dir:           "",
 	}
 }
 
@@ -100,11 +102,11 @@ loop:
 			if !singleQuoted && !doubleQuoted && !dollarQuote {
 				if p.ParseBacktick {
 					if backQuote {
-						out, err := shellRun(backtick)
+						out, err := shellRun(backtick, p.Dir)
 						if err != nil {
 							return nil, err
 						}
-						buf = out
+						buf = buf[:len(buf)-len(backtick)] + out
 					}
 					backtick = ""
 					backQuote = !backQuote
@@ -117,15 +119,11 @@ loop:
 			if !singleQuoted && !doubleQuoted && !backQuote {
 				if p.ParseBacktick {
 					if dollarQuote {
-						out, err := shellRun(backtick)
+						out, err := shellRun(backtick, p.Dir)
 						if err != nil {
 							return nil, err
 						}
-						if r == ')' {
-							buf = buf[:len(buf)-len(backtick)-2] + out
-						} else {
-							buf = buf[:len(buf)-len(backtick)-1] + out
-						}
+						buf = buf[:len(buf)-len(backtick)-2] + out
 					}
 					backtick = ""
 					dollarQuote = !dollarQuote
@@ -155,7 +153,7 @@ loop:
 				continue
 			}
 		case ';', '&', '|', '<', '>':
-			if !(escaped || singleQuoted || doubleQuoted || backQuote) {
+			if !(escaped || singleQuoted || doubleQuoted || backQuote || dollarQuote) {
 				if r == '>' && len(buf) > 0 {
 					if c := buf[0]; '0' <= c && c <= '9' {
 						i -= 1

vendor/github.com/mattn/go-shellwords/util_go15.go

@@ -9,14 +9,19 @@ import (
 	"strings"
 )
 
-func shellRun(line string) (string, error) {
+func shellRun(line, dir string) (string, error) {
 	var b []byte
 	var err error
+	var cmd *exec.Cmd
 	if runtime.GOOS == "windows" {
-		b, err = exec.Command(os.Getenv("COMSPEC"), "/c", line).Output()
+		cmd = exec.Command(os.Getenv("COMSPEC"), "/c", line)
 	} else {
-		b, err = exec.Command(os.Getenv("SHELL"), "-c", line).Output()
+		cmd = exec.Command(os.Getenv("SHELL"), "-c", line)
 	}
+	if dir != "" {
+		cmd.Dir = dir
+	}
+	b, err = cmd.Output()
 	if err != nil {
 		return "", err
 	}

vendor/github.com/mattn/go-shellwords/util_posix.go

@@ -9,9 +9,13 @@ import (
 	"strings"
 )
 
-func shellRun(line string) (string, error) {
+func shellRun(line, dir string) (string, error) {
 	shell := os.Getenv("SHELL")
-	b, err := exec.Command(shell, "-c", line).Output()
+	cmd := exec.Command(shell, "-c", line)
+	if dir != "" {
+		cmd.Dir = dir
+	}
+	b, err := cmd.Output()
 	if err != nil {
 		if eerr, ok := err.(*exec.ExitError); ok {
 			b = eerr.Stderr

vendor/github.com/mattn/go-shellwords/util_windows.go

@@ -9,9 +9,13 @@ import (
 	"strings"
 )
 
-func shellRun(line string) (string, error) {
+func shellRun(line, dir string) (string, error) {
 	shell := os.Getenv("COMSPEC")
-	b, err := exec.Command(shell, "/c", line).Output()
+	cmd := exec.Command(shell, "/c", line)
+	if dir != "" {
+		cmd.Dir = dir
+	}
+	b, err := cmd.Output()
 	if err != nil {
 		if eerr, ok := err.(*exec.ExitError); ok {
 			b = eerr.Stderr