Fix knightly pipeline

This PR is the combination of !23 (closed) !27 (closed) !28 (closed). Since the three PR is kind of in a circular dependency and hard to integrate and debug. So I create this new PR to make it easier.

ansible/group_vars/compute

@@ -57,7 +57,6 @@
     - "lua-lpeg"
     - "lua-posix"
     - "lua-term"
-    - "munge"
     - "mysql++"
     - "net-snmp-recent"
     - "node-installer-slave"