Fix SOC3 test

[odow]

The termination status should accept INFEASIBLE_OR_UNBOUNDED, and instead of if config.duals, it should be if config.infeas_certificates.

https://github.com/JuliaOpt/MathOptInterface.jl/blob/bb800e909389ec62d00f1ecbfd8c4a549797b310/src/Test/contconic.jl#L499-L505