Enable Enterprise features in travis

Author: Paul Korzhyk

scripts/functions.sh

@@ -26,7 +26,8 @@ function quit {
 
 function start {
     echo -e "Starting Dgraph alpha."
-    dgraph alpha -p data/p -w data/w --lru_mb 4096 --zero localhost:5080 > data/server.log 2>&1 &
+    head -c 1024 /dev/random > data/acl-secret.txt
+    dgraph alpha -p data/p -w data/w --lru_mb 4096 --zero localhost:5080 --acl_secret_file data/acl-secret.txt > data/server.log 2>&1 &
     # Wait for membership sync to happen.
     sleep $sleepTime
     return 0