Create local instance with remote image

Bug: 117306227
Test: m acloud && atest acloud_test &&
acloud create --local_instance

Change-Id: I63904751d408d0a9ee1bcf5c17955a396d09c781
diff --git a/internal/constants.py b/internal/constants.py
index 2ca62f2..80d22d0 100755
--- a/internal/constants.py
+++ b/internal/constants.py
@@ -95,6 +95,7 @@
 VNC_PORT = "vnc_port"
 ADB_PORT = "adb_port"
 
+CMD_LAUNCH_CVD = "launch_cvd"
 ENV_ANDROID_BUILD_TOP = "ANDROID_BUILD_TOP"
 
 LOCALHOST_ADB_SERIAL = "127.0.0.1:%d"