Fixed the developer_mode = true by default in attributes
Removed the node attribute "developer_mode"

This should only be set as an environment variable,
set within Chef.
forced evaluation of the Node Attribute.

"developer_mode" should only be used if it is true.
Merge pull request #142 from cloudnull/DE199-grizzly

DE199 grizzly
Fixes DE196 - glance db and admin passwords

not getting set correctly on first chef run.  also, node.save should be
called after Opscode::OpenSSL::Password#secure_password in glance::setup
Merge pull request #143 from invsblduck/DE196

Fixes DE196 - glance db and admin passwords
enable_snet