Handling newline characters in tags

[BrentonPoke]

Hopefully this is the last one I have to do to clean up #684. Another attempt was made at #702, but checkstyle made things...difficult.

[codecov-commenter]

Codecov Report

Merging #703 into master will increase coverage by 0.08%.
The diff coverage is 90.90%.

@@             Coverage Diff              @@
##             master     #703      +/-   ##
============================================
+ Coverage     59.09%   59.18%   +0.08%     
- Complexity      413      419       +6     
============================================
  Files            69       70       +1     
  Lines          2540     2548       +8     
  Branches        268      270       +2     
============================================
+ Hits           1501     1508       +7     
  Misses          972      972              
- Partials         67       68       +1     

Impacted Files	Coverage Δ	Complexity Δ
src/main/java/org/influxdb/dto/BatchPoints.java	87.87% <75.00%> (-0.67%)	24.00 <0.00> (ø)
src/main/java/org/influxdb/dto/Point.java	92.56% <100.00%> (+0.03%)	52.00 <0.00> (ø)
...rc/main/java/org/influxdb/dto/utils/CheckTags.java	100.00% <100.00%> (ø)	6.00 <6.00> (?)

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[BrentonPoke]

@fmachado So how is this one? Good enough?