cli: move client-only code out of the server flow

earlier, some of the client exclusive code was being run on zot server
instance too.

cli: fix the bug: spinner is not stopped with -o

cmd/zot/main.go

@@ -2,20 +2,12 @@ package main
 
 import (
 	"os"
-	"path"
 
 	"github.com/anuvu/zot/pkg/cli"
 )
 
 func main() {
-	home, err := os.UserHomeDir()
-	if err != nil {
-		panic(err)
-	}
-
-	configPath := path.Join(home + "/.zot")
-
-	if err := cli.NewRootCmd(configPath).Execute(); err != nil {
+	if err := cli.NewRootCmd().Execute(); err != nil {
 		os.Exit(1)
 	}
 }

cmd/zot/main_test.go

@@ -1,7 +1,6 @@
 package main_test
 
 import (
-	"io/ioutil"
 	"testing"
 
 	"github.com/anuvu/zot/pkg/api"
@@ -15,8 +14,7 @@ func TestIntegration(t *testing.T) {
 		c := api.NewController(config)
 		So(c, ShouldNotBeNil)
 
-		tempFile, _ := ioutil.TempFile("", "tmp-")
-		cl := cli.NewRootCmd(tempFile.Name())
+		cl := cli.NewRootCmd()
 		So(cl, ShouldNotBeNil)
 
 		So(cl.Execute(), ShouldBeNil)