Fix CUDA warnings in UnitTestCreateOnDevice (Exawind#825)

* Fix CUDA warnings in UnitTestCreateOnDevice

CDash: https://my.cdash.org/viewBuildError.php?type=1&buildid=1981182

* Add defaulted function decorations

Fix a couple of variable shadowing warnings from a Sandia intel 17 bu…

…ild.

Merge pull request Exawind#17 from alanw0/master

Basic unit-test infrastructure.

Add parallel decomposition method (on-the-fly)

  - name: realm_1
    mesh: 1cm_ped_35K.g
    use_edges: no
    automatic_decomposition_type: rcb