bump gems for ruby 2.1.2

Signed-off-by: Phan Le <ple@pivotallabs.com>
declaring rubocop bankruptcy

Signed-off-by: Phan Le <ple@pivotallabs.com>
Update eventmachine and nats

Signed-off-by: Aram Price <aprice@pivotallabs.com>
Convert specs to RSpec 3.0.0 syntax with Transpec

This conversion is done by Transpec 2.2.1 with the following command:
    transpec spec/unit/validation_helper_spec.rb

* 6 conversions
    from: obj.should
      to: expect(obj).to

* 5 conversions
    from: expect { }.should
      to: expect { }.to

For more details: https://github.com/yujinakayama/transpec#supported-conversions
switch from pending to skip

Signed-off-by: Phan Le <ple@pivotallabs.com>
switch from should_receive in favor of allow/expect.to receive

Signed-off-by: Phan Le <ple@pivotallabs.com>
remove and_return with blocks

Signed-off-by: Phan Le <ple@pivotallabs.com>
described_class was not working with rspec 3.0, so switch to being explicit

Signed-off-by: Phan Le <ple@pivotallabs.com>
remove unneeded test

Signed-off-by: Phan Le <ple@pivotallabs.com>
fix random rspec API changes

Signed-off-by: Phan Le <ple@pivotallabs.com>
switch style of skipping os_image tests

Signed-off-by: Phan Le <ple@pivotallabs.com>
switch style of skipping stemcell_image tests

Signed-off-by: Phan Le <ple@pivotallabs.com>
update rspec, serverspec, specinfra (and related monkeypatches)

Signed-off-by: Phan Le <ple@pivotallabs.com>
remove instafail from gemfile.lock

Signed-off-by: Phan Le <ple@pivotallabs.com>
Bump rubocop

Signed-off-by: Phan Le <ple@pivotallabs.com>
Bump Golang cookbook

Signed-off-by: Phan Le <ple@pivotallabs.com>