When configuring kolla with
- kolla_enable_tls_external: "yes"
ceilometer service credential defaults to publicURL.
Ceilometer should work with the internal interface (v3 API Identity syntax):
.....
[service_credentials]
interface = internal
.....
Change-Id: I898ffb2b901f08b810756d80dbb988d8c9298219
Closes-Bug: #1643860