Add a unit spec and changelog entry

CHANGELOG.md

@@ -8,7 +8,9 @@ To install release candidates run `[sudo] gem install cocoapods --pre`
 
 ##### Enhancements
 
-* None.  
+* Use host target for frameworks of XPC services.
+  [Ingmar Stein](https://github.com/IngmarStein)
+  [#6029](https://github.com/CocoaPods/CocoaPods/pull/6029)
 
 ##### Bug Fixes
 

spec/unit/target/aggregate_target_spec.rb

@@ -224,6 +224,11 @@ module Pod
             @target.requires_host_target?.should == true
           end
 
+          it 'requires a host target for XPC service targets' do
+            @target.user_targets.first.stubs(:symbol_type).returns(:xpc_service)
+            @target.requires_host_target?.should == true
+          end
+
           it 'does not require a host target for watch 2 extension targets' do
             @target.user_targets.first.stubs(:symbol_type).returns(:watch2_extension)
             @target.requires_host_target?.should == false