* ensure provisioning method only provisions specified service
* add ProjectService as return type for provisionService method

Change-Id: I6786388da75df6f9f2ac694dc5aa3dab88ec7222
Reviewed-on: https://q.tasktop.com/alm/s/c2c-oss/gerrit/106
Reviewed-by: Michael Nelson <michael.nelson@tasktop.com>
Tested-by: Hudson
Reviewed-by: Myles Feichtinger <myles.feichtinger@tasktop.com>
Tested-by: Myles Feichtinger <myles.feichtinger@tasktop.com>