feat: add requirePartitionFilter field in HivePartitioningOptions

[pmakani]

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Fixes #251

[codecov]

Codecov Report

Merging #803 into master will increase coverage by 0.01%.
The diff coverage is 90.90%.

@@             Coverage Diff              @@
##             master     #803      +/-   ##
============================================
+ Coverage     80.42%   80.44%   +0.01%     
- Complexity     1266     1268       +2     
============================================
  Files            79       79              
  Lines          6534     6545      +11     
  Branches        747      749       +2     
============================================
+ Hits           5255     5265      +10     
  Misses          888      888              
- Partials        391      392       +1     

Impacted Files	Coverage Δ	Complexity Δ
...google/cloud/bigquery/HivePartitioningOptions.java	85.41% <90.90%> (+1.63%)	13.00 <1.00> (+2.00)

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