Fix Style/HashSyntax by updating to Ruby 1.9 hash syntax

Gemfile

@@ -5,5 +5,5 @@ gemspec
 
 group :development do
   gem 'rack-test'
-  gem 'smart_proxy', :git => 'https://github.com/theforeman/smart-proxy.git', :branch => 'develop'
+  gem 'smart_proxy', git: 'https://github.com/theforeman/smart-proxy.git', branch: 'develop'
 end

lib/smart_proxy_realm_ad/plugin.rb

@@ -4,7 +4,7 @@
 
 module Proxy::AdRealm
   class Plugin < Proxy::Provider
-    default_settings :computername_prefix => '', :computername_use_fqdn => false
+    default_settings computername_prefix: '', computername_use_fqdn: false
 
     load_classes ::Proxy::AdRealm::ConfigurationLoader
     load_dependency_injection_wirings ::Proxy::AdRealm::ConfigurationLoader

test/internal_api_test.rb

@@ -27,22 +27,22 @@ def app
   end
 
   def setup
-    @server = Proxy::AdRealm::Provider.new(:realm => 'test.com')
+    @server = Proxy::AdRealm::Provider.new(realm: 'test.com')
   end
 
   def test_create_host
     realm = 'TEST.COM'
     hostname = 'test.com'
     @server.expects(:create).with(realm, hostname, is_a(Hash))
-    post "/#{realm}", :hostname => 'test.com'
+    post "/#{realm}", hostname: 'test.com'
     assert last_response.ok?, "Last response was not ok: #{last_response.status} #{last_response.body}"
   end
 
   def test_rebuild_host
     realm = 'TEST.COM'
     hostname = 'test.com'
     @server.expects(:create).with(realm, hostname, has_entry('rebuild', 'true'))
-    post "/#{realm}", :hostname => 'test.com', :rebuild => true
+    post "/#{realm}", hostname: 'test.com', rebuild: true
     assert last_response.ok?, "Last response was not ok: #{last_response.status} #{last_response.body}"
   end