fix(parameter): prints message when there is nothing to upload

When the user run rio parameter upload and there's no tree found to
upload, the command will not print an appropriate message informing the
user that there'sn nothing to upload.

Wrike Tickets:
1. https://www.wrike.com/open.htm?id=1182851006
2. https://www.wrike.com/open.htm?id=1182849811

riocli/parameter/upload.py

@@ -56,6 +56,10 @@ def upload_configurations(
         click.secho('{} {}'.format(Symbols.ERROR, e), fg=Colors.RED)
         raise SystemExit(1)
 
+    if not trees:
+        click.secho('{} No configuration trees to upload.'.format(Symbols.INFO), fg=Colors.BRIGHT_CYAN)
+        return
+
     click.secho('Following configuration trees will be uploaded')
     click.secho()
     display_trees(path, trees)

riocli/parameter/utils.py

@@ -48,7 +48,7 @@ def filter_trees(
         trees.append(each)
 
     if tree_names and not trees:
-        raise Exception('specified tree names are invalid')
+        raise Exception('one or more specified tree names are invalid')
 
     return trees