Merge remote-tracking branch 'origin/rel/2.0.0-preview1' into dev

build/dependencies.props

@@ -4,6 +4,7 @@
     <AspNetCoreIntegrationTestingVersion>0.4.0-*</AspNetCoreIntegrationTestingVersion>
     <CoreFxVersion>4.3.0</CoreFxVersion>
     <InternalAspNetCoreSdkVersion>2.0.0-*</InternalAspNetCoreSdkVersion>
+    <NETStandardImplicitPackageVersion>$(BundledNETStandardPackageVersion)</NETStandardImplicitPackageVersion>
     <TestSdkVersion>15.0.0</TestSdkVersion>
     <XunitVersion>2.2.0</XunitVersion>
   </PropertyGroup>