Adds python-marconiclient project

Adds initital setup/configuration for python-marconiclient project

Change-Id: I74e258d483d560a2ab5b57fac6fa2e4305854c1b
NOTE: No releases to pypi are needed.
Reviewed-on: https://review.openstack.org/28258
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Approved: Jeremy Stanley <fungi@yuggoth.org>
Reviewed-by: Jeremy Stanley <fungi@yuggoth.org>
Tested-by: Jenkins