don't test GLPK MSD

[mlubin]

No description provided.

[mlubin]

checking if this passes travis

[codecov]

Codecov Report

Merging #306 into master will decrease coverage by 5.65%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master    #306      +/-   ##
=========================================
- Coverage   91.06%   85.4%   -5.66%     
=========================================
  Files           4       4              
  Lines        1679    1679              
=========================================
- Hits         1529    1434      -95     
- Misses        150     245      +95

Impacted Files	Coverage Δ
src/conic_algorithm.jl	84.25% <0%> (-6.62%)	⬇️
src/nonlinear_algorithm.jl	89.59% <0%> (-3.79%)	⬇️

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