fix(kube): improve kubeconfig path overrides

pkg/bosun/bosun.go

@@ -378,11 +378,15 @@ func (b *Bosun) UseStack(stack brns.StackBrn) error {
 	b.ws.CurrentCluster = b.env.Cluster().Name
 	b.ws.CurrentStack = b.env.Stack().Name
 
+
 	b.ws.CurrentKubeconfig = b.ws.ClusterKubeconfigPaths[b.ws.CurrentCluster]
 	if b.ws.CurrentKubeconfig == "" {
 		b.ws.CurrentKubeconfig = os.ExpandEnv("$HOME/.kube/config")
 	}
 
+	cluster := b.env.Cluster()
+	cluster.KubeconfigPath = b.ws.CurrentKubeconfig
+
 	err = b.ws.Save()
 	return err
 }

pkg/environment/environment.go

@@ -178,6 +178,8 @@ func (e *Environment) Render(ctx environmentvariables.Dependencies) (string, err
 		vars["BOSUN_STACK_BRN"] = e.Stack().Brn.String()
 	}
 
+	vars["KUBECONFIG"] = ctx.WorkspaceContext().CurrentKubeconfig
+
 	s := command.RenderEnvironmentSettingScript(vars, aliases)
 
 	return s, nil

pkg/kube/cluster_config.go

@@ -47,6 +47,7 @@ func (c ClusterConfig) GetKubeconfigPath() string {
 	if c.KubeconfigPath == "" {
 		return os.ExpandEnv("$HOME/.kube/config")
 	}
+
 	return c.KubeconfigPath
 }