Fix up unit tests to not look for sqlite exceptions, since we are not using sqlite anymore. [1/1]

What the title says.

 crowbar_framework/test/unit/barclamp_model_test.rb   |  2 +-
 crowbar_framework/test/unit/deployment_model_test.rb |  2 +-
 crowbar_framework/test/unit/group_model_test.rb      |  2 +-
 crowbar_framework/test/unit/jig_model_test.rb        |  4 ++--
 crowbar_framework/test/unit/node_model_test.rb       | 20 ++++++++++----------
 crowbar_framework/test/unit/user_model_test.rb       |  2 +-
 doc/devguide/model/role.md                           |  2 +-
 7 files changed, 17 insertions(+), 17 deletions(-)

Crowbar-Pull-ID: 6c17c628dd38b9cf1c3fac8ea8d942bd2cc0f97e

Crowbar-Release: development