Replace bash release helper scripts with Go progam

cmd/gorepomod/internal/repo/managerfactory.go

@@ -0,0 +1,35 @@
+package repo
+
+import (
+	"sigs.k8s.io/kustomize/cmd/gorepomod/internal/misc"
+	"sigs.k8s.io/kustomize/cmd/gorepomod/internal/mod"
+)
+
+// ManagerFactory is a collection of clean data needed to build
+// clean, fully wired up instances of Manager.
+type ManagerFactory struct {
+	dg               *DotGitData
+	modules          []*protoModule
+	remoteName       misc.TrackedRepo
+	versionMapLocal  misc.VersionMap
+	versionMapRemote misc.VersionMap
+}
+
+func (mf *ManagerFactory) NewRepoManager() *Manager {
+	result := &Manager{
+		dg:         mf.dg,
+		remoteName: mf.remoteName,
+	}
+	var modules misc.LesModules
+	for _, pm := range mf.modules {
+		shortName := pm.ShortName(mf.dg.RepoPath())
+		modules = append(
+			modules,
+			mod.New(
+				result, shortName, pm.mf,
+				mf.versionMapLocal.Latest(shortName),
+				mf.versionMapRemote.Latest(shortName)))
+	}
+	result.modules = modules
+	return result
+}