slicer/test: Set archive options from release

Currently testArchive.Options() returns archive.Options with only the
Arch field set. In future we would like to extend testArchive to behave
differently based on its chisel.yaml definition.

Initialize archive.Options from setup.Release and store it in the
testArchive structure for each archive defined in chise.yaml.

internal/slicer/slicer_test.go

@@ -527,12 +527,12 @@ const defaultChiselYaml = `
 `
 
 type testArchive struct {
-	arch string
-	pkgs map[string][]byte
+	options archive.Options
+	pkgs    map[string][]byte
 }
 
 func (a *testArchive) Options() *archive.Options {
-	return &archive.Options{Arch: a.arch}
+	return &a.options
 }
 
 func (a *testArchive) Fetch(pkg string) (io.ReadCloser, error) {
@@ -579,9 +579,15 @@ func (s *S) TestRun(c *C) {
 			pkgs[name] = deb
 		}
 		archives := map[string]archive.Archive{}
-		for name, _ := range release.Archives {
+		for name, setupArchive := range release.Archives {
 			archive := &testArchive{
-				arch: test.arch,
+				options: archive.Options{
+					Label:      setupArchive.Name,
+					Version:    setupArchive.Version,
+					Suites:     setupArchive.Suites,
+					Components: setupArchive.Components,
+					Arch:       test.arch,
+				},
 				pkgs: pkgs,
 			}
 			archives[name] = archive