Cookstyle cleanups

Signed-off-by: Tim Smith <tsmith@chef.io>

test/integration/helpers/serverspec/spec_helper.rb

@@ -3,22 +3,15 @@ require 'serverspec'
 set :backend, :exec
 set :path, '/sbin:/usr/local/sbin:$PATH'
 
-def get_family
+def family
   fam = 'solaris2'
   return fam unless File.exist? '/etc/release'
-  File.open('/etc/release') do |file|
-    while line = file.gets
-      case line
-      when /^\s*(OmniOS)/
-        fam = 'omnios'
-      end
-    end
-  end
+  fam = 'omnios' if File.open('/etc/release').read =~ /^\s*(OmniOS)/
   fam
 end
 
 def postfix_conf_path
-  if os[:family] == 'solaris' && get_family == 'omnios'
+  if os[:family] == 'solaris' && family == 'omnios'
     '/opt/omni/etc/postfix/'
   else
     '/etc/postfix'