Updated openstack/openstack
Project: openstack/ceilometer  ee16c9acedc098fb0ff4a7d79305571f628faa8f

Docs: Add description of pipeline discovery section

Added description of pipeline discovery section, also corrected some
minor errors.

Closes-Bug: #1371373

Change-Id: I7370d1464fc5723c9535f0c90b3e4c2281361e42
Updated openstack/openstack
Project: openstack/horizon  20be51e43a9f21b9ebf9f772cdad7a90c849958a

Uniquify horizon messages returned in a single response

A network operation can fail because of different
reasons - yet in many places just one error message
is provided. Combined with too broad exception clause,
and incorrect assumptions on the reasons of failure
(e.g. Neutron service being unavailable causes all
other sorts of errors like inability to Allocate IP
or Associate it) this leads to multiple errors when just one
would suffice. The fix aims to provide sensible error
messages in case the network service is down. This includes
returning only unique messages in a single response.

Partial-Bug: #1301374
Change-Id: Id6c620ca51f7703f35c0c172e39fdf237fa42278
Co-Authored-By: Timur Sufiev <tsufiev@mirantis.com>