TST: Reduce test size to prevent 32-bit crash
TST: Reduce test size to prevent 32-bit crash

Reduce matrix size from 10000x10000 to avoid issues on 32 bit platforms

bashtage/statsmodels,josef-pkt/statsmodels,statsmodels/statsmodels,statsmodels/statsmodels,jseabold/statsmodels,statsmodels/statsmodels,statsmodels/statsmodels,bashtage/statsmodels,josef-pkt/statsmodels,jseabold/statsmodels,jseabold/statsmodels,bashtage/statsmodels,bashtage/statsmodels,statsmodels/statsmodels,josef-pkt/statsmodels,bashtage/statsmodels,josef-pkt/statsmodels,josef-pkt/statsmodels,statsmodels/statsmodels,jseabold/statsmodels,jseabold/statsmodels,bashtage/statsmodels,josef-pkt/statsmodels