BLD: Add line displaying CPU info to CI

[bashtage]

Show CPU type in CI to help understand random failures

[coveralls]

Coverage remained the same at 83.975% when pulling 90a4d12 on bashtage:get-cpu-info-appveyor into a9bb76a on statsmodels:master.

[bashtage]

Coveralls is really bugged -- 0 changes to code and a decrease in coverage.

[jbrockmendel]

Travis log suggests running with sudo.

+1 on this.

[jbrockmendel]

Looking at the logs this works as advertised. @josef-pkt should be merged

[codecov]

Codecov Report

Merging #5059 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #5059   +/-   ##
=======================================
  Coverage   81.45%   81.45%           
=======================================
  Files         582      582           
  Lines       90116    90116           
  Branches    10093    10093           
=======================================
  Hits        73401    73401           
  Misses      14416    14416           
  Partials     2299     2299

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[jbrockmendel]

@josef-pkt we’ve got a fellow trying to improve the CI here. Maybe let him?

[jbrockmendel]

@josef-pkt please empower someone to help with this kind of thing.