openml-h2o: Force schema compatibility between H2O model schema and the openml schema

[JPDSousa]

In the context of QA testing, it was detected than when attempting to import a model with a given schema that contains a subset of the total fields with which the model was trained, the loading would succeed, while the expected behaviour would be for the loading operation to fail.

As such, this commit adds a new validation step to make sure that the schema included in the model to be loaded is compatible with the correspondent openml schema. Additionally, a regression test was added.

[codecov[bot]]

Codecov Report

Merging #11 into master will increase coverage by 0.32%. The diff coverage is 100%.

@@             Coverage Diff              @@
##             master      #11      +/-   ##
============================================
+ Coverage     79.17%   79.49%   +0.32%     
- Complexity      255      257       +2     
============================================
  Files            27       27              
  Lines           826      839      +13     
  Branches         75       76       +1     
============================================
+ Hits            654      667      +13     
  Misses          130      130              
  Partials         42       42

Impacted Files	Coverage Δ	Complexity Δ
...n/java/com/feedzai/openml/h2o/H2OModelCreator.java	67.5% <100%> (+6.3%)	15 <2> (+2)	:arrow_up:

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[nmldiegues]

I don't get Codacy complaint. The Junit method has an assertion...

[JPDSousa]

Backported to hf-1.0.X and hf-0.5.X