CentOS tests were blocked due to issue https://github.com/dotnet/corefx/issues/5066.
It has been fixed with the latest NetStandardLibrary, hence upgrading from 1.0.0-rc2-23616 to 1.0.0-rc2-23704.
With this fix the native shims are correctly restored by dnx for RID centos.7-x64.
Provides a few benefits:
1) The new package has the correct dependencies listed, so I removed the
-MissingDependenciesOK flag from the crossgen scripts.
2) The new compiler supports -publicSign (formerly called "OSS sign"),
which I patched through dotnet-compile-csc .
