Fix hard-codings of quantum for havana support

This commit solves some of the low hanging
fruit for havana.

- removes enabled_services from global_hiera_params
(it was not being used)
- ensure enabled_services adds %{network_service}
- ensure that basic_test.sh updates quantum to neutron for havana
- add global_hiera_params/jenkins.yaml to gitignore
Merge pull request #142 from bodepd/resolve_havana_issues

Resolve havana issues