Validate Ignore Field in the Request

[AkshayBhansali18]

Validate Ignore Field in the Request and Send Ignore Dict to Backbone for processing.

[codecov-commenter]

Codecov Report

Merging #818 (31ac97f) into master (3c95be7) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master     #818      +/-   ##
==========================================
+ Coverage   78.67%   78.68%   +0.01%     
==========================================
  Files          21       21              
  Lines        1702     1703       +1     
==========================================
+ Hits         1339     1340       +1     
  Misses        363      363              

Impacted Files	Coverage Δ
bayesian/utility/v2/stack_analyses.py	100.00% <ø> (ø)
bayesian/utility/v2/sa_models.py	100.00% <100.00%> (ø)

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