Update tests/validate_devfile_schemas.sh

Co-authored-by: Michael Valdron <mvaldron@redhat.com>

Author: JslYoon

tests/validate_devfile_schemas.sh

@@ -10,14 +10,17 @@ handle_additional_args() {
     case $1 in
         -s|--samples)
             SAMPLES="true"
-            return 1
+            echo 1
+            return 0
             ;;
         -v|--verbose)
             VERBOSE="true"
-            return 1 
+            echo 1
+            return 0 
             ;;
         *)
-            return 0 
+            echo 0
+            return 1
             ;;
     esac
 }