Increasing ZK wait timeout

Default timeout of 1 sec was not enough on some VM environment.

Change-Id: I749900b82c40307ffd6526b5017448967c074607
diff --git a/onos.sh b/onos.sh
index 57d24db..e6d7d68 100755
--- a/onos.sh
+++ b/onos.sh
@@ -544,7 +544,7 @@
 }
 
 function start-coord {
-  wait-zk-or-die 1
+  wait-zk-or-die 2
 
   if [ ! -d ${LOGDIR} ]; then
     mkdir -p ${LOGDIR}
@@ -665,7 +665,7 @@
 }
 
 function start-server {
-  wait-zk-or-die 1
+  wait-zk-or-die 2
 
   if [ ! -d ${LOGDIR} ]; then
     mkdir -p ${LOGDIR}