fix(contrib/digitalocean): update network interface to eth1

Author: intellix

contrib/digitalocean/cloud-config.yml

@@ -25,7 +25,7 @@ coreos:
     - name: private.network
       content: |
         [Match]
-        Name=ens4v1
+        Name=eth1
 
         [Network]
         Address=PRIVATE_IP

contrib/digitalocean/coreos-setup-environment

@@ -16,6 +16,6 @@ fi
 sed -i -e '/^COREOS_PUBLIC_IPV4=/d;/^COREOS_PRIVATE_IPV4=/d' $ENV
 
 COREOS_PUBLIC_IPV4=$(ip -4 -o addr show dev eth0 | awk '{ print $4; }' | cut -d / -f1)
-COREOS_PRIVATE_IPV4=$(ip -4 -o addr show dev ens4v1 | awk '{ print $4; }' | cut -d / -f1)
+COREOS_PRIVATE_IPV4=$(ip -4 -o addr show dev eth1 | awk '{ print $4; }' | cut -d / -f1)
 echo COREOS_PUBLIC_IPV4=$COREOS_PUBLIC_IPV4 >> $ENV
 echo COREOS_PRIVATE_IPV4=$COREOS_PRIVATE_IPV4 >> $ENV