[SPARK-9277] [MLLIB] SparseVector constructor must throw an error when...

[SPARK-9277] [MLLIB] SparseVector constructor must throw an error when declared number of elements less than array length

Check that SparseVector size is at least as big as the number of indices/values provided. And add tests for constructor checks.

CC MechCoder jkbradley -- I am not sure if a change needs to also happen in the Python API? I didn't see it had any similar checks to begin with, but I don't know it well.

Author: Sean Owen <sowen@cloudera.com>

Closes #7794 from srowen/SPARK-9277 and squashes the following commits:

e8dc31e [Sean Owen] Fix scalastyle
6ffe34a [Sean Owen] Check that SparseVector size is at least as big as the number of indices/values provided. And add tests for constructor checks.