Make LBaaS total_connections cumulative

The total_connections LBaaS data point is presently incorrectly
listed as a gauge. Since the total_connections data point will be an
ever-increasing value (much the same as bytes_in and bytes_out are),
this commit corrects total_connections to also be cumulative.

Change-Id: I60d468a7d24e0a5bdb4c2f680af24397b4c0d77c
Closes-Bug: #1401352
RBAC Support for Ceilometer API Implementation

This patch adds policy based Role Based Access Control
to the Ceilometer V2 APIs.

Validation/Enforcement of the policy is executed for the
different controllers and hence it is possible to
granularly control access.

Co-Authored-By: Fabio Giannetti <fabio.giannetti@hp.com>

Change-Id: I788b9b31c8cfba9f3caa19f1f6d465a3f81101ad
Merge "RBAC Support for Ceilometer API Implementation"
Merge "Make LBaaS total_connections cumulative"