Install golang from the package manager instead of external binaries

There is a golang cookbook but this also installs from external
binaries or from source, which seems pointless when all the supported
platforms already have a sufficiently recent version available. If
it's not in the main repositories then it can at least be found in
EPEL (which we already use) or Universe. The Ubuntu versions mentioned
in .kitchen.yml should be updated anyway.

Author: chewi

attributes/default.rb

@@ -81,6 +81,7 @@
 default['gitlab']['packages'] = %w(
   cmake
   curl
+  golang
   nodejs
   python-docutils
   sudo

recipes/default.rb

@@ -365,42 +365,6 @@ class unix_stream_socket connectto;
   not_if { File.exist?(bundle_success) }
 end
 
-# Install Gitlab Git HTTP server
-
-## get Go 1.5 # TODO, for future PR find cookbook for Go ie: https://github.com/NOX73/chef-golang
-golang_package = 'https://storage.googleapis.com/golang/go1.5.linux-amd64.tar.gz'
-temp_golangpkg = '/tmp/gitlab_git_http_server.tar'
-
-remote_file temp_golangpkg do
-  source golang_package
-  # checksum node['']['']['checksum']
-  owner 'root'
-  group 'root'
-  mode '0755'
-  notifies :run, 'bash[extract_golang]', :immediately
-  not_if { ::File.exist?('/usr/local/bin/go') }
-end
-
-bash 'extract_golang' do
-  action :run
-  cwd ::File.dirname(node['gitlab']['home'])
-  code <<-EOH
-    tar -C /usr/local -xzf #{temp_golangpkg}
-    rm -f #{temp_golangpkg}
-    EOH
-  not_if { ::File.exist?('/usr/local/bin/go') }
-end
-
-%w(go godoc gofmt).each do |l|
-  link "/usr/local/bin/#{l}" do
-    to "/usr/local/go/bin/#{l}"
-    not_if "test -e /usr/local/bin/#{l}"
-    only_if "test -e /usr/local/go/bin/#{l}"
-    # not_if {File.exists?("/usr/local/bin/#{l}")}
-    # only_if {File.exists?("/usr/local/go/bin/#{l}")}
-  end
-end
-
 # Install gitlab git http server
 git "#{node['gitlab']['home']}/gitlab-git-http-server" do
   # default repository 'https://gitlab.com/gitlab-org/gitlab-git-http-server.git