Add dependency on monit recipe.

This commit refs #104.
Restart munin-node, if it seems not to work properly.

Restart munin-node, either of these two conditions:

- PID of the munin-node is not listed when executing ps command.
- The 4949 port of the localhost does not respond.

This commit fixes #104.
Merge branch 'id/104' into dev
Merge commit 'a6b8f5ce33cf49d8d079abc7117c0b15e13f5c09' into HEAD