cleanup cone oracle tests, check oracle allocations

[chriscoey]

No description provided.

[codecov]

Codecov Report

Merging #664 (6dc6f67) into master (ea5ca1d) will decrease coverage by 0.10%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #664      +/-   ##
==========================================
- Coverage   96.36%   96.25%   -0.11%     
==========================================
  Files          48       48              
  Lines        7402     7402              
==========================================
- Hits         7133     7125       -8     
- Misses        269      277       +8     

Impacted Files	Coverage Δ
src/Cones/Cones.jl	93.31% <ø> (ø)
src/Cones/generalizedpower.jl	98.63% <100.00%> (ø)
src/MathOptInterface/cones.jl	98.80% <100.00%> (ø)
src/Solvers/steppers/combined.jl	88.54% <0.00%> (-6.25%)	⬇️
src/Solvers/systemsolvers/qrchol.jl	93.70% <0.00%> (-2.80%)	⬇️
src/Cones/hypopowermean.jl	97.97% <0.00%> (-0.68%)	⬇️
src/Cones/wsosinterpepinormone.jl	97.09% <0.00%> (+0.96%)	⬆️

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