switch to sql server 2014

appveyor.yml

@@ -3,9 +3,9 @@ os: Visual Studio 2015
 environment:
   BUILDING_ON_PLATFORM: win
   BuildEnvironment: appveyor
-  Cap_SqlServer_ConnectionStringTemplate: Server=.\SQL2012SP1;Database={0};User ID=sa;Password=Password12!
+  Cap_SqlServer_ConnectionStringTemplate: Server=(local)\SQL2014;Database={0};User ID=sa;Password=Password12!
 services:
-  - mssql2012sp1
+  - mssql2014
 build_script:
 - ps: ./ConfigureMSDTC.ps1
 - ps: ./build.ps1