BUG: Add random number generator seed for vnl_algo_test_sparse_lm.

For intermittent failures of the test.

Change-Id: I0c0e0643e7a2445365d3fa9f8162d8853fb35e9d
Suggested-by: Luis Ibanez <luis.ibanez@kitware.com>
Merge branch 'sparse-lm-test'

This patch was provided from the ITK community to fix an itermittently
failing test due to randomly generated test data.

* sparse-lm-test:
  BUG: Add random number generator seed for vnl_algo_test_sparse_lm.