Allow build_essential resource to be used without setting a namebuild_name

This is the same as apt_update. It seems odd to use this resource with a name like this:

```ruby
build_essential "build-essential"
```

Signed-off-by: Tim Smith <tsmith@chef.io>

1 files changed, 8 insertions, 0 deletions

diff --git a/spec/unit/resource/build_essential_spec.rb b/spec/unit/resource/build_essential_spec.rb
index dff94e6bdc..5c25d3e961 100644
--- a/spec/unit/resource/build_essential_spec.rb
+++ b/spec/unit/resource/build_essential_spec.rb
@@ -28,4 +28,12 @@ describe Chef::Resource::BuildEssential do
   it "has a default action of install" do
     expect(resource.action).to eql([:install])
   end
+
+  context "when not settting a resource name" do
+    let(:resource) { Chef::Resource::BuildEssential.new(nil) }
+
+    it "the name defaults to an empty string" do
+      expect(resource.name).to eql("")
+    end
+  end
 end