Add n-api-meta to enabled services
Add n-api-meta to enabled services

Afer If2d7e363a6541854f2e30c03171bef7a41aff745, it seems we've
to enable n-api-meta, as we override the devstack default
services.

Change-Id: I694f4917610a36eec6895795e8e0a3ddc628b60d
Closes-Bug: #1701467

openstack-infra/project-config,openstack-infra/project-config