Also check for curl failure in driver

driver/src/driver.sh

@@ -96,7 +96,10 @@ ghostAction() {
     else
         local data="{\"type\": \"$action\", \"droplet\": $vps}"
     fi
-    response=$(curl -sS -X POST -H "Authorization: Bearer $apiToken" "$url" -d "$data")
+    if ! response=$(curl -sS -X POST -H "Authorization: Bearer $apiToken" "$url" -d "$data")
+    then
+        exitWithFailure "$response"
+    fi
     # Record the complete body from the HTTP response in the log.
     debug "output: "
     debug $(jq '.' <<<"$response")