fix motd

Change-Id: I93a911a9d58f9ad6cd3389280df586df460d1f34
diff --git a/classes/cluster/mcp-day01/infra/init.yml b/classes/cluster/mcp-day01/infra/init.yml
index b309406..1bcfb47 100644
--- a/classes/cluster/mcp-day01/infra/init.yml
+++ b/classes/cluster/mcp-day01/infra/init.yml
@@ -48,15 +48,16 @@
         enabled: true
         contents: ${_param:banner}
       motd:
-      - banner:
-          ${_param:char_number_sign}!/bin/bash
+      - banner: |
+          #!/bin/bash
 
           cat << _EOF
 
           ${_param:banner}_EOF
+
           [ -r /etc/image_version ] && . /etc/image_version
           echo "Ubuntu 16.04 \"Xenial\" Mirantis day01 cloud image"
-          echo "Build date: ${BUILD_TIMESTAMP_RFC}"
+          echo "Build date: $BUILD_TIMESTAMP_RFC"
       package:
         cloud-init:
           version: latest