Decouple swift-proxy from ceilometer

Decouple swift-proxy from ceilometer

This patch updates the swift-proxy base profile so that
we now explicitly set the rabbit_port. This allows us
to remove the use of puppet-ceilometer default settings
in the puppet-tripleo modules change ID here:
I8d9f69f5e9160543b372bd9886800f16f625fdc6

It also adds a new boolean parameter that allows the
end user to disable the swift ceilometer pipeline
by setting SwiftCeilometerPipelineEnabled to false.

This two settings allow Swift to once again be installed
on a machine without configuring Ceilometer.

Depends-On: Id1584df5e5bb90f8087ae25eecc4834179b6fc21

Change-Id: Ief5399d7ea4d26e96ce54903a69d660fa4fe3ce9
Related-bug: #1648736