cmd/distpack: add test case for pack tool being excluded

For #71867

Change-Id: Ic4c6304b9a6b35c45bf35342523930924c68545a
Reviewed-on: https://go-review.googlesource.com/c/go/+/677635
LUCI-TryBot-Result: Go LUCI <[email protected]>
Reviewed-by: Michael Matloob <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>
Reviewed-by: Dmitri Shuralyov <[email protected]>

Author: matloob

src/cmd/distpack/test.go

@@ -66,6 +66,8 @@ var zipRules = []testRule{
 	{name: "go/pkg/tool/*/compile", goos: "darwin"},
 	{name: "go/pkg/tool/*/compile", goos: "windows", exclude: true},
 	{name: "go/pkg/tool/*/compile.exe", goos: "windows"},
+	{name: "go/pkg/tool/*/pack", exclude: true},
+	{name: "go/pkg/tool/*/pack.exe", exclude: true},
 }
 
 var modRules = []testRule{
@@ -100,6 +102,8 @@ var modRules = []testRule{
 	{name: "golang.org/toolchain@*/pkg/tool/*/compile", goos: "darwin"},
 	{name: "golang.org/toolchain@*/pkg/tool/*/compile", goos: "windows", exclude: true},
 	{name: "golang.org/toolchain@*/pkg/tool/*/compile.exe", goos: "windows"},
+	{name: "golang.org/toolchain@*/pkg/tool/*/pack", exclude: true},
+	{name: "golang.org/toolchain@*/pkg/tool/*/pack.exe", exclude: true},
 
 	// go.mod are renamed to _go.mod.
 	{name: "**/go.mod", exclude: true},