[Stager] Rakefile clean up

- `rake spec' no longer installs dependencies
  - no shelling out
  - single Rakefile
  - separate gemspec
  - replaced obsoleted gempackagetask with Gem::PackageTask
  - `rake install` continues to build and install stager gem

Change-Id: If55229379ec28504f68d3f8d1bf92da3bf3c76c9

stager/Rakefile

@@ -1,57 +1,20 @@
-require 'rubygems'
-require 'rake'
-require 'rake/gempackagetask'
+require 'rubygems/package_task'
+require 'rspec/core/rake_task'
+require 'ci/reporter/rake/rspec'
 
-$LOAD_PATH.unshift(File.join(File.dirname(__FILE__), 'lib'))
-require 'vcap/stager/version'
-
-GEM_NAME    = 'vcap_stager'
-GEM_VERSION = VCAP::Stager::VERSION
-
-gemspec = Gem::Specification.new do |s|
-  s.name         = GEM_NAME
-  s.version      = GEM_VERSION
-  s.platform     = Gem::Platform::RUBY
-  s.summary      = 'Component responsible for staging apps'
-  s.description  = 'Takes an app package, environment, and services' \
-                   + ' and produces a droplet that is executable by the DEA'
-  s.authors      = ['Matt Page']
-  s.email        = 'mpage@vmware.com'
-  s.homepage     = 'http://www.cloudfoundry.com'
-  s.executables  = []
-  s.bindir       = 'bin'
-  s.require_path = 'lib'
-  s.files        = %w(Rakefile Gemfile) + Dir.glob("{lib,spec,vendor}/**/*")
-end
-
-Rake::GemPackageTask.new(gemspec) do |pkg|
-  pkg.gem_spec = gemspec
-end
+gemspec = Gem::Specification.load('vcap_stager.gemspec')
+gem_package_task = Gem::PackageTask.new(gemspec) {}
+gem_path = File.join(gem_package_task.package_dir, gemspec.full_name)
 
+desc "Install #{gem_path}"
 task :install => [:package] do
-  sh "gem install --no-ri --no-rdoc pkg/#{GEM_NAME}-#{GEM_VERSION}"
+  sh "gem install --no-ri --no-rdoc #{gem_path}"
 end
 
-task :spec => ['bundler:install:test'] do
-  desc 'Run tests'
-  sh('cd spec && rake spec')
+RSpec::Core::RakeTask.new(:spec) do |t|
+  t.pattern = 'spec/**/*_spec.rb'
+  t.rspec_opts = ['--color', '--format nested']
 end
 
-task 'ci:spec' do
-  desc 'Run tests for CI'
-  sh('cd spec && rake ci:spec')
-end
-
-namespace 'bundler' do
-  task 'install' do
-    sh('bundle install')
-  end
-
-  environments = %w(test development production)
-  environments.each do |env|
-    desc "Install gems for #{env}"
-    task "install:#{env}" do
-      sh("bundle install --local --without #{(environments - [env]).join(' ')}")
-    end
-  end
-end
+desc "Run specs producing results for CI"
+task 'ci:spec' => ['ci:setup:rspec', :spec]

stager/spec/Rakefile

@@ -1,20 +0,0 @@
-require 'rake'
-
-BASE_DIR = File.expand_path(File.join('..', '..'), __FILE__)
-ENV["BUNDLE_GEMFILE"] ||= File.join(BASE_DIR, 'Gemfile')
-require 'rubygems'
-require 'bundler'
-Bundler.setup(:default, :test)
-
-require 'rspec/core/rake_task'
-require 'ci/reporter/rake/rspec'
-ENV['CI_REPORTS'] = File.expand_path('reports', File.dirname(__FILE__))
-
-RSpec::Core::RakeTask.new(:spec) do |t|
-  t.pattern = '**/*_spec.rb'
-  t.rspec_opts = ['--color', '--format nested']
-end
-
-task :default => [:spec]
-
-task 'ci:spec' => ['ci:setup:rspec', :spec]