vendor in containers/(common,buildah,storage,image)

Changes as of 2022-04-21:

- apply-podman-deltas: minor cleanup
- buildah-tests.diff: deal with:
  . buildah #3894 (the registry one), which affected helpers.bash in
    a way that resulted in conflicts here; and
  . buildah #3917 (etchosts), which caused offset-only diffs
    with no conflicts
- Reevaluate the bud skip list, and reenable some tests that
  seems to be passing now under podman:
  . bud with specified context ...
  . two tests that require a local registry (which buildah now runs)
  . bud with --cgroup-parent

Signed-off-by: Ed Santiago <santiago@redhat.com>
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

vendor/github.com/onsi/gomega/internal/gutil/using_ioutil.go

@@ -0,0 +1,47 @@
+//go:build !go1.16
+// +build !go1.16
+
+// Package gutil is a replacement for ioutil, which should not be used in new
+// code as of Go 1.16. With Go 1.15 and lower, this implementation
+// uses the ioutil functions, meaning that although Gomega is not officially
+// supported on these versions, it is still likely to work.
+package gutil
+
+import (
+	"io"
+	"io/ioutil"
+)
+
+func NopCloser(r io.Reader) io.ReadCloser {
+	return ioutil.NopCloser(r)
+}
+
+func ReadAll(r io.Reader) ([]byte, error) {
+	return ioutil.ReadAll(r)
+}
+
+func ReadDir(dirname string) ([]string, error) {
+	files, err := ioutil.ReadDir(dirname)
+	if err != nil {
+		return nil, err
+	}
+
+	var names []string
+	for _, file := range files {
+		names = append(names, file.Name())
+	}
+
+	return names, nil
+}
+
+func ReadFile(filename string) ([]byte, error) {
+	return ioutil.ReadFile(filename)
+}
+
+func MkdirTemp(dir, pattern string) (string, error) {
+	return ioutil.TempDir(dir, pattern)
+}
+
+func WriteFile(filename string, data []byte) error {
+	return ioutil.WriteFile(filename, data, 0644)
+}