close #72 possibility to give VMs a name

lib/vagrant-libvirt.rb

@@ -3,10 +3,10 @@ require 'vagrant-libvirt/plugin'
 
 module VagrantPlugins
   module ProviderLibvirt
-    lib_path = Pathname.new(File.expand_path("../vagrant-libvirt", __FILE__))
-    autoload :Action, lib_path.join("action")
-    autoload :Errors, lib_path.join("errors")
-    autoload :Util, lib_path.join("util")
+    lib_path = Pathname.new(File.expand_path('../vagrant-libvirt', __FILE__))
+    autoload :Action, lib_path.join('action')
+    autoload :Errors, lib_path.join('errors')
+    autoload :Util, lib_path.join('util')
 
     # Hold connection handler so there is no need to connect more times than
     # one. This can be annoying when there are more machines to create, or when
@@ -23,7 +23,7 @@ module VagrantPlugins
     end
 
     def self.source_root
-      @source_root ||= Pathname.new(File.expand_path("../../", __FILE__))
+      @source_root ||= Pathname.new(File.expand_path('../../', __FILE__))
     end
   end
 end

lib/vagrant-libvirt/action/read_state.rb

@@ -1,4 +1,4 @@
-require "log4r"
+require 'log4r'
 
 module VagrantPlugins
   module ProviderLibvirt
@@ -8,7 +8,7 @@ module VagrantPlugins
       class ReadState
         def initialize(app, env)
           @app    = app
-          @logger = Log4r::Logger.new("vagrant_libvirt::action::read_state")
+          @logger = Log4r::Logger.new('vagrant_libvirt::action::read_state')
         end
 
         def call(env)
@@ -21,9 +21,9 @@ module VagrantPlugins
 
           # Find the machine
           server = libvirt.servers.get(machine.id)
-          if server.nil? || [:"shutting-down", :terminated].include?(server.state.to_sym)
+          if server.nil? || [:'shutting-down', :terminated].include?(server.state.to_sym)
             # The machine can't be found
-            @logger.info("Machine not found or terminated, assuming it got destroyed.")
+            @logger.info('Machine not found or terminated, assuming it got destroyed.')
             machine.id = nil
             return :not_created
           end

lib/vagrant-libvirt/action/set_name_of_domain.rb

@@ -11,8 +11,9 @@ module VagrantPlugins
         def call(env)
           require 'securerandom'
           env[:domain_name] = env[:root_path].basename.to_s.dup
-          env[:domain_name].gsub!(/[^-a-z0-9_]/i, "")
-          env[:domain_name] << "_#{SecureRandom.hex}"
+          env[:domain_name].gsub!(/[^-a-z0-9_]/i, '')
+          env[:domain_name] << '_'
+          env[:domain_name] << env[:machine].name.to_s
 
           # Check if the domain name is not already taken
           domain = ProviderLibvirt::Util::Collection.find_matching(