Use JST, instead of UTC.

This commit fixes #133.
Merge branch 'id/133' into dev
Modify the download URL of munin-node debs.

This commit fixes #135.
Merge branch 'id/135' into dev
Deploy sudoers file, in order to grant sudo command onto kazu634.

This commit fixes #129.
Correct typo of the URLs.

This commit fixes #135.
Merge branch 'id/135' into dev
Merge branch 'id/129' into dev
Merge commit 'a37c7a0ec4ef47a5afee72c08e93de4112797ed8' into HEAD