[xenserver] replace #connection with #service in models

connection is now deprecated as per #1415, #1392

lib/fog/xenserver/models/compute/host.rb

@@ -45,8 +45,8 @@ module Fog
         def host_cpus
           cpus = []
           (__host_cpus || []).each do |ref|
-            cpu_ref = connection.get_record(ref, 'host_cpu' )
-            cpu_ref[:connection] = connection
+            cpu_ref = service.get_record(ref, 'host_cpu' )
+            cpu_ref[:service] = service
             cpus << Fog::Compute::XenServer::HostCpu.new(cpu_ref)
           end
           cpus
@@ -72,7 +72,7 @@ module Fog
         #
         def reboot(auto_disable = true)
           disable if auto_disable
-          connection.reboot_host(reference)
+          service.reboot_host(reference)
         end
         
         #
@@ -82,7 +82,7 @@ module Fog
         # @see http://docs.vmd.citrix.com/XenServer/6.0.0/1.0/en_gb/api/?c=host
         #
         def disable 
-          connection.disable_host(reference)
+          service.disable_host(reference)
         end
         
         #
@@ -91,7 +91,7 @@ module Fog
         # @see http://docs.vmd.citrix.com/XenServer/6.0.0/1.0/en_gb/api/?c=host
         #
         def enable
-          connection.enable_host(reference)
+          service.enable_host(reference)
         end
 
         #
@@ -108,11 +108,11 @@ module Fog
         #
         def shutdown(auto_disable = true)
           disable if auto_disable
-          connection.shutdown_host(reference)
+          service.shutdown_host(reference)
         end
         
         def set_attribute(name, *val)
-          data = connection.set_attribute( 'host', reference, name, *val )
+          data = service.set_attribute( 'host', reference, name, *val )
           # Do not reload automatically for performance reasons
           # We can set multiple attributes at the same time and
           # then reload manually

lib/fog/xenserver/models/compute/host_cpu.rb

@@ -27,7 +27,7 @@ module Fog
         attribute :vendor
 
         def host
-          connection.hosts.get __host
+          service.hosts.get __host
         end
         
       end

lib/fog/xenserver/models/compute/pbd.rb

@@ -28,7 +28,7 @@ module Fog
         end
         
         def unplug
-          connection.unplug_pbd reference
+          service.unplug_pbd reference
         end
 
       end

lib/fog/xenserver/models/compute/pool.rb

@@ -27,7 +27,7 @@ module Fog
         end
 
         def default_sr=(sr)
-          connection.set_attribute( 'pool', reference, 'default_SR', sr.reference )
+          service.set_attribute( 'pool', reference, 'default_SR', sr.reference )
         end
         alias :default_storage_repository= :default_sr=
 
@@ -36,11 +36,11 @@ module Fog
         end
 
         def suspend_image_sr=(sr)
-          connection.set_attribute( 'pool', reference, 'suspend_image_SR', sr.reference )
+          service.set_attribute( 'pool', reference, 'suspend_image_SR', sr.reference )
         end
 
         def suspend_image_sr
-          connection.storage_repositories.get __suspend_image_sr
+          service.storage_repositories.get __suspend_image_sr
         end
 
         def master
@@ -48,7 +48,7 @@ module Fog
         end
         
         def set_attribute(name, *val)
-          data = connection.set_attribute( 'pool', reference, name, *val )
+          data = service.set_attribute( 'pool', reference, name, *val )
           # Do not reload automatically for performance reasons
           # We can set multiple attributes at the same time and
           # then reload manually

lib/fog/xenserver/models/compute/storage_repository.rb

@@ -41,7 +41,7 @@ module Fog
         end
 
         def destroy
-          connection.destroy_sr reference
+          service.destroy_sr reference
         end
         
         def save
@@ -59,8 +59,8 @@ module Fog
 
           # create_sr request provides sane defaults if some attributes are
           # missing
-          attr = connection.get_record(
-            connection.create_sr( host.reference, 
+          attr = service.get_record(
+            service.create_sr( host.reference, 
                                   name,
                                   type,
                                   description || '',
@@ -76,7 +76,7 @@ module Fog
         end
         
         def set_attribute(name, *val)
-          data = connection.set_attribute( 'SR', reference, name, *val )
+          data = service.set_attribute( 'SR', reference, name, *val )
           # Do not reload automatically for performance reasons
           # We can set multiple attributes at the same time and
           # then reload manually