- see issues aspnet/DependencyInjection#193 and #1612
- use `TryAdd()` in `MvcServices` for the `IAssemblyProvider`
Move `ApplicationBasePath` handling into `RazorPreCompileModule`
- restores view precompilation in functional tests of sample sites
- if we need this, others will as well
- override `IApplicationEnvironment` but get folder from `ProjectContext`
- also remove remaining `IServiceProvider` implementations in this code
test fixes:
- simplify `IApplicationEnvironment` override
- move override logic into `TestHelper.CreateServer()` methods
- remove `LoggerFactory` setup
- does not seem to require special-casing
- remove unused `ITestConfigurationProvider` / `TestConfigurationProvider`
- remove `TestAssemblyProvider` classes
- no longer required
- remove `ReplaceCallContextServiceLocationService` test helper
- change MVC sample to fully-qualify config.json path
- avoids `ReplaceCallContextServiceLocationService` need in `MvcSampleTests`
- no longer required for other tests
nit: remove unused `_serviceProvider` and constructor overload in `RazorPreCompiler`