Fix failing Loc lookups in hosting service (#679)

* Remove XUnit warnings which clogged up output

* Use default namespace to fix loc lookup errors
- Fixed errors due to localization change
- Also removed internals visible attribute that could cause subtle issues where the hosting service doesn't work for other apps if things change

* Add CI build and test for new projects

* Up version number so we can pick up fix in nuget packages

appveyor.yml

@@ -17,9 +17,11 @@ before_build:
 
 build_script:
   - dotnet build src/Microsoft.SqlTools.ServiceLayer
+  - dotnet build src/Microsoft.SqlTools.CoreServices
 
 test_script:
   - dotnet test test/Microsoft.SqlTools.ServiceLayer.UnitTests
+  - dotnet test test/Microsoft.SqlTools.Hosting.UnitTests
 
 after_test:
   - cd test/CodeCoverage