fix --format {{json .}} output to match docker

`--format json` should not be the same as `--format {{json .}}`, the
later should actually run through the go template and thus create one
json object per entry instead of an json array.

Includes a vendor of c/common@main since it requires a fix from there as
well.

This matches docker compat.
Fixes #16436

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

cmd/podman/parse/json.go

@@ -1,10 +0,0 @@
-package parse
-
-import "regexp"
-
-var jsonFormatRegex = regexp.MustCompile(`^\s*(json|{{\s*json\s*(\.)?\s*}})\s*$`)
-
-// MatchesJSONFormat test CLI --format string to be a JSON request.
-func MatchesJSONFormat(s string) bool {
-	return jsonFormatRegex.Match([]byte(s))
-}

cmd/podman/parse/json_test.go

@@ -1,45 +0,0 @@
-package parse
-
-import (
-	"fmt"
-	"strings"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestMatchesJSONFormat(t *testing.T) {
-	tests := []struct {
-		input    string
-		expected bool
-	}{
-		{"json", true},
-		{" json", true},
-		{" json ", true},
-		{"  json   ", true},
-		{"{{json}}", true},
-		{"{{json }}", true},
-		{"{{json .}}", true},
-		{"{{ json .}}", true},
-		{"{{ json . }}", true},
-		{"  {{   json   .  }}  ", true},
-		{"{{ json .", false},
-		{"json . }}", false},
-		{"{{.ID }} json .", false},
-		{"json .", false},
-		{"{{json.}}", true},
-	}
-
-	for _, tt := range tests {
-		assert.Equal(t, tt.expected, MatchesJSONFormat(tt.input))
-	}
-
-	for _, tc := range tests {
-		tc := tc
-		label := "MatchesJSONFormat/" + strings.ReplaceAll(tc.input, " ", "_")
-		t.Run(label, func(t *testing.T) {
-			t.Parallel()
-			assert.Equal(t, tc.expected, MatchesJSONFormat(tc.input), fmt.Sprintf("Scanning %q failed", tc.input))
-		})
-	}
-}