Updated Ceilometer HA

When Ceilometer HA was setup, the HAProxy config was setup with an
HTTP check. This is not possible in Ceilometer without the HTTP
request having authentication headers as ceilometer will return
a 401 and fail the HAProxy check.

The check type has been changed to TCP and the balancing type was
set to source with no options.
Merge pull request #74 from cloudnull/ceilometer-change

Merged automatically by jenkins after successful build test
Fixes Issue #705: nova metadata service not load balanced

Depends on new 'nova-api-metadata' role and changes in nova.conf
template (from nova_conf provider).
Merge pull request #76 from invsblduck/issue705_ha_metadata_proxy

Merged automatically by jenkins after successful build test
Added keystone vip
Merge pull request #78 from cloudnull/Issue798

Merged automatically by jenkins after successful build test