Support delete local instance in acloud deleted function.

Bug: 117474343
Test: m acloud && atest acloud_test && acloud delete
Change-Id: I925308163e5d55a1dbce1a11f13802557bd840f5
diff --git a/internal/constants.py b/internal/constants.py
index 0951688..0ef4156 100755
--- a/internal/constants.py
+++ b/internal/constants.py
@@ -96,6 +96,7 @@
 ADB_PORT = "adb_port"
 
 CMD_LAUNCH_CVD = "launch_cvd"
+CMD_STOP_CVD = "stop_cvd"
 ENV_ANDROID_BUILD_TOP = "ANDROID_BUILD_TOP"
 
 LOCALHOST_ADB_SERIAL = "127.0.0.1:%d"