Rewritten resource_pool view to HAML

@skateman getting error when comparing VMs under Resource Pool
[----] F, [2014-10-10T15:01:04.903353 #2935:8437f8] FATAL -- : Error caught: [NameError] undefined local variable or method `showtype' for #<#<Class:0x000000110277c0>:0x00000009887f80>
/home/hkataria/dev/manageiq/vmdb/app/views/resource_pool/show.html.haml:11:in `_app_views_resource_pool_show_html_haml___2375152744020603989_148571000'
/home/hkataria/.rvm/gems/ruby-1.9.3-p547/bundler/gems/rails-8cf411ee95e7/actionpack/lib/action_view/template.rb:145:in `block in render'