missed an augeas dependency

Author: binford2k

configs/projects/_shared-agent-components.rb

@@ -35,6 +35,7 @@
 proj.component "ruby-#{proj.ruby_version}"
 proj.component "readline" if platform.is_macos?
 proj.component 'augeas' unless platform.is_windows?
+-proj.component 'libxml2' unless platform.is_windows?
 
 proj.component 'ruby-augeas' unless platform.is_windows?
 proj.component 'ruby-shadow' unless platform.is_aix? || platform.is_windows?