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> (?)

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 6107962...604b1cf. Read the comment docs.

[BrentonPoke]

@fmachado So how is this one? Good enough?