mgmt_system fixtures have a new home

- They're in the fixtures dir now
Merge pull request #77 from seandst/fix-mgmtsys-imports

mgmt_system fixtures have a new home
moved the order of field completion to allow UI to update hidden fields
Merge pull request #78 from aweiteka/provider_setup_fixture_field_ordering

moved the order of field completion to allow UI to update hidden fields
ssh_client fixture, updated/expanded ssh utils

- Needs a change to credentials.yaml, see credentials.yaml.template
- Tests!
selenium fixture now supports navigation fixtures
Merge pull request #79 from seandst/distributed-testing-selenium-shenanigans

selenium fixture now supports navigation fixtures
Merge pull request #83 from seandst/distributed-testing-ssh-shenanigans

ssh_client fixture, updated/expanded ssh utils