Pin the gems and add omnibus-software from Chef

Gemfile

@@ -5,7 +5,7 @@ gem 'omnibus', '~> 4.0'
 # Use Chef's software definitions. It is recommended that you write your own
 # software definitions, but you can clone/fork Chef's to get you started.
-# gem 'omnibus-software', github: 'opscode/omnibus-software'
+gem 'omnibus-software', github: 'opscode/omnibus-software'
 # This development group is installed by default when you run `bundle install`,
 # but if you are using Omnibus in a CI-based infrastructure, you do not need

Gemfile.lock

+GIT
+  remote: git://github.com/opscode/omnibus-software.git
+  revision: e84914afce6feb98edcb718cf27fd9a2467e9187
+  specs:
+    omnibus-software (4.0.0)
+
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.3.6)
+    berkshelf (3.2.2)
+      addressable (~> 2.3.4)
+      berkshelf-api-client (~> 1.2)
+      buff-config (~> 1.0)
+      buff-extensions (~> 1.0)
+      buff-shell_out (~> 0.1)
+      celluloid (~> 0.16.0)
+      celluloid-io (~> 0.16.1)
+      cleanroom (~> 1.0)
+      faraday (~> 0.9.0)
+      minitar (~> 0.5.4)
+      octokit (~> 3.0)
+      retryable (~> 1.3.3)
+      ridley (~> 4.0)
+      solve (~> 1.1)
+      thor (~> 0.19)
+    berkshelf-api-client (1.2.0)
+      faraday (~> 0.9.0)
+    buff-config (1.0.1)
+      buff-extensions (~> 1.0)
+      varia_model (~> 0.4)
+    buff-extensions (1.0.0)
+    buff-ignore (1.1.1)
+    buff-ruby_engine (0.1.0)
+    buff-shell_out (0.2.0)
+      buff-ruby_engine (~> 0.1.0)
+    celluloid (0.16.0)
+      timers (~> 4.0.0)
+    celluloid-io (0.16.1)
+      celluloid (>= 0.16.0)
+      nio4r (>= 1.0.0)
+    chef-sugar (2.5.0)
+    cleanroom (1.0.0)
+    dep-selector-libgecode (1.0.2)
+    dep_selector (1.0.3)
+      dep-selector-libgecode (~> 1.0)
+      ffi (~> 1.9)
+    erubis (2.7.0)
+    faraday (0.9.1)
+      multipart-post (>= 1.2, < 3)
+    ffi (1.9.6)
+    ffi-yajl (1.3.1)
+      ffi (~> 1.5)
+      libyajl2 (~> 1.2)
+    hashie (2.1.2)
+    hitimes (1.2.2)
+    ipaddress (0.8.0)
+    json (1.8.1)
+    kitchen-vagrant (0.15.0)
+      test-kitchen (~> 1.0)
+    libyajl2 (1.2.0)
+    mime-types (1.25.1)
+    minitar (0.5.4)
+    mixlib-authentication (1.3.0)
+      mixlib-log
+    mixlib-cli (1.5.0)
+    mixlib-config (2.1.0)
+    mixlib-log (1.6.0)
+    mixlib-shellout (1.6.1)
+    multipart-post (2.0.0)
+    net-http-persistent (2.9.4)
+    net-scp (1.2.1)
+      net-ssh (>= 2.6.5)
+    net-ssh (2.9.1)
+    nio4r (1.0.1)
+    octokit (3.7.0)
+      sawyer (~> 0.6.0, >= 0.5.3)
+    ohai (7.4.0)
+      ffi (~> 1.9)
+      ffi-yajl (~> 1.0)
+      ipaddress
+      mime-types (~> 1.16)
+      mixlib-cli
+      mixlib-config (~> 2.0)
+      mixlib-log
+      mixlib-shellout (~> 1.2)
+      systemu (~> 2.6.4)
+      wmi-lite (~> 1.0)
+    omnibus (4.0.0)
+      chef-sugar (~> 2.2)
+      cleanroom (~> 1.0)
+      mixlib-shellout (~> 1.4)
+      ohai (~> 7.2)
+      thor (~> 0.18)
+      uber-s3
+    retryable (1.3.6)
+    ridley (4.1.1)
+      addressable
+      buff-config (~> 1.0)
+      buff-extensions (~> 1.0)
+      buff-ignore (~> 1.1)
+      buff-shell_out (~> 0.1)
+      celluloid (~> 0.16.0)
+      celluloid-io (~> 0.16.1)
+      erubis
+      faraday (~> 0.9.0)
+      hashie (>= 2.0.2, < 3.0.0)
+      json (>= 1.7.7)
+      mixlib-authentication (>= 1.3.0)
+      net-http-persistent (>= 2.8)
+      retryable
+      semverse (~> 1.1)
+      varia_model (~> 0.4)
+    safe_yaml (1.0.4)
+    sawyer (0.6.0)
+      addressable (~> 2.3.5)
+      faraday (~> 0.8, < 0.10)
+    semverse (1.2.1)
+    solve (1.2.1)
+      dep_selector (~> 1.0)
+      semverse (~> 1.1)
+    systemu (2.6.4)
+    test-kitchen (1.2.1)
+      mixlib-shellout (~> 1.2)
+      net-scp (~> 1.1)
+      net-ssh (~> 2.7)
+      safe_yaml (~> 1.0)
+      thor (~> 0.18)
+    thor (0.19.1)
+    timers (4.0.1)
+      hitimes
+    uber-s3 (0.2.4)
+      mime-types (~> 1.17)
+    varia_model (0.4.0)
+      buff-extensions (~> 1.0)
+      hashie (>= 2.0.2, < 3.0.0)
+    wmi-lite (1.0.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  berkshelf (~> 3.0)
+  kitchen-vagrant (~> 0.14)
+  omnibus (~> 4.0)
+  omnibus-software!
+  test-kitchen (~> 1.2)