cmd/clone: check project name and honor http flag

Since the git passthrough was removed the clone command needs to check
for the project name being passed in the command line and also the
flags instead of pass everything directly to Git.

Signed-off-by: Bruno Meneguele <bmeneg@redhat.com>

cmd/clone.go

@@ -24,6 +24,19 @@ var cloneCmd = &cobra.Command{
 		lab clone company/backend-team/awesome-repo`),
 	PersistentPreRun: labPersistentPreRun,
 	Run: func(cmd *cobra.Command, args []string) {
+		if len(args) == 0 {
+			log.Fatal("You must specify a repository to clone.")
+		}
+
+		useHTTP, err := cmd.Flags().GetBool("http")
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		if useHTTP {
+			args = append(args, []string{"--http"}...)
+		}
+
 		project, err := gitlab.FindProject(args[0])
 		if err == gitlab.ErrProjectNotFound {
 			err = git.New(append([]string{"clone"}, args...)...).Run()