Fix order of steps in test-driver initialization

test-driver

@@ -59,6 +59,9 @@ run_init() {
     start_vagrant \
         || die "could not start VMs"
 
+    wait_for_vms \
+        || die "could not reach the VMs with Ansible"
+
     log Running init-credentials playbook
     ${float_dir}/float run init-credentials.yml \
         || die "failed to run the init-credentials playbook"
@@ -67,8 +70,6 @@ run_init() {
     ${float_dir}/float run site.yml \
         || die "failed to run the main playbook"
 
-    wait_for_vms \
-        || die "could not reach the VMs with Ansible"
 }
 
 run_cleanup() {