Rubocop polishing

This change polishes the Rubocop configuration a bit

Author: nebhale

.rubocop.yml

@@ -27,7 +27,8 @@ RSpec/FilePath:
 Style/Documentation:
   Enabled: false
 Style/EmptyLinesAroundBlockBody:
-  Enabled: false
+  Exclude:
+    - 'spec/**/*'
 Style/EmptyLinesAroundClassBody:
   Enabled: false
 Style/EmptyLinesAroundModuleBody:

lib/java_buildpack/framework/spring_insight.rb

@@ -45,7 +45,6 @@ def detect
       def compile
         JavaBuildpack::Util::Cache::InternetAvailability.instance.available(
           true, 'The Spring Insight download location is always accessible') do
-
           # TODO: AGENT_DOWNLOAD_URI_SUFFIX To be removed once the full path is included in VCAP_SERVICES see #58873498
           download(@version, @uri.chomp('/') + AGENT_DOWNLOAD_URI_SUFFIX) { |file| expand file }
         end