Fog >= 1.11.0 breaks run with elasticsearch::ebs

[Pneumatus]

Since the release of Fog 1.11.0 (and 1.11.1) the elasticsearch::ebs recipe causes the chef run to fail due to the latest version of fog installing a conflicting version of the json gem.

The run fails on a brand new machine with the error:

[2013-05-07T08:54:08+00:00] FATAL: Gem::LoadError: ruby_block[Create EBS volume on /dev/xvdf (size: 10GB)](elasticsearch::ebs line 16) had an error: Gem::LoadError: Unable to activate fog-1.11.1, because json-1.5.4 conflicts with json (~> 1.7)

Forcing the version of the fog gem down to 1.10.1 with the following resolves the issue as a band-aid, but there's probably a better way to do it.

chef_gem 'fog' do
  version '1.10.1'
  action :install
end

[karmi]

Thanks!, added the version to the recipe. Verified it to be working in Vagrant and EC2.