Specify the secret file for encryption.

see: http://blog.kenjiskywalker.org/blog/2013/05/20/chef-databag/

This commit fixes #199.
Delete the Chef encrypted databag secret key.

This commit refs #199.
Use the .chef_databag_secret under /home/kazu634.

Use the /home/kazu634/.chef_databag_secret
to decipher the encrypted databag.

This commit refs #199.
Merge branch 'id/199' into dev

Conflicts:
	site-cookbooks/jenkins/recipes/env.rb