Issue 6651: Added alias ls for dvc list (#6683)

dvc/command/ls/__init__.py

@@ -54,6 +54,7 @@ def add_parser(subparsers, parent_parser):
     )
     list_parser = subparsers.add_parser(
         "list",
+        aliases=["ls"],
         parents=[parent_parser],
         description=append_doc_link(LIST_HELP, "list"),
         help=LIST_HELP,

tests/unit/command/ls/test_ls.py

@@ -109,3 +109,8 @@ def test_show_colors(mocker, capsys, monkeypatch):
         "\x1b[01;34msrc\x1b[0m",
         "\x1b[01;32mrun.sh\x1b[0m",
     ]
+
+
+def test_list_alias():
+    cli_args = parse_args(["ls", "local_dir"])
+    assert cli_args.func == CmdList