Update .NET Core 1.1 version.

Author: bgrainger

.travis.yml

@@ -28,7 +28,7 @@ before_install:
 - sudo dpkg -i packages-microsoft-prod.deb
 - sudo apt-get install apt-transport-https
 - sudo apt-get update
-- sudo apt-get install -y dotnet-sdk-2.1 dotnet-sharedframework-microsoft.netcore.app-1.1.2
+- sudo apt-get install -y dotnet-sdk-2.1 dotnet-sharedframework-microsoft.netcore.app-1.1.10
 
 script:
 - dotnet restore