Set spipi to new name instead of IP address

Improved config script so the spipi config file doesn't have
to be updated with the IP address of the raspberry pi.

scripts/_spipi.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-SPIPI=${SPIPI:-"ubuntu@10.17.89.179"}
+SPIPI=${SPIPI:-"system76@spipi.local"}
 
 if [ ! -d "models/${MODEL}" ]
 then