Adding source for the air gaped environment use case.
Adding source for the air gaped environment use case.

GH-121

* Uses node['lvm']'['gemsource'] in the two chef_gem resources that
remove gems but hang or fail when rubygems.org is not available.

Signed-off-by: Beauregard, Josh <9c5c52ce717173122108c6d5d98eda7d987ec116@gmail.com>

ChiefAlexander/lvm,chef-cookbooks/lvm,chef-cookbooks/lvm,opscode-cookbooks/lvm,opscode-cookbooks/lvm,ChiefAlexander/lvm