[Tizen] skip dotnet specific arguments in corerun

[Tizen] skip dotnet specific arguments in corerun

Now we use corerun to run corefx tests instead of dotnet, because last
one isn't available for Tizen/armel. So we need to skip dotnet specific
arguments, we patch corerun for it because Microsoft.DotNet.RemoteExecutor
tries to execute binary that it gets from /proc/self/maps, so we need a
binary that will behave like dotnet.