Bump version to 2.0.4

Author: ivadim

metadata.rb

@@ -7,7 +7,7 @@
 source_url       'https://github.com/Microsoft/vsts-agent-cookbook' if respond_to?(:source_url)
 issues_url       'https://github.com/Microsoft/vsts-agent-cookbook/issues' if respond_to?(:issues_url)
 chef_version     '>= 12.4' if respond_to?(:chef_version)
-version          '2.0.3'
+version          '2.0.4'
 
 %w(ubuntu debian redhat centos mac_os_x windows).each do |operating_system|
   supports operating_system