Start HA CLI interactively and with a tty allocated (#3238)

Use -i (--interactive) and -t (--tty) to start the HA CLI interactively.
This is required by some commands like the new device wipe command added
with home-assistant/cli#464.

(cherry picked from commit fe1978f)

buildroot-external/rootfs-overlay/usr/bin/ha

@@ -3,4 +3,4 @@
 # HA utility
 # ==============================================================================
 
-docker exec hassio_cli ha "$@"
+docker exec -it hassio_cli ha "$@"