rpc-common-ips

Updating rpc_user_config.yml.example with commonly used IPs for internal_lb_vip_address as well as compute, infra, network hosts with commonly used 10.240.0.0/22 rpc IPs
Default to creating agent token for each entity

Currently, we require the operator to specify an existing agent token
to use for all entities.  This means the operator needs to make a call
to MaaS to determine the agent token ID before being able to deploy the
environment.  This change creates a new agent token w/ label matching
the entity in question and configures the agent to use that token.  If
the user variable maas_agent_token is defined, then we skip creating an
agent token and use the token specified.

Closes issue #263
Fixes #204 by adding logstash filtering and kibana
lines for horizon
Merge pull request #304 from d34dh0r53/pr-204

Fixes #204 by adding logstash filtering and kibana lines for horizon
Merge pull request #278 from woodardchristop/patch-1

rpc-common-ips
Merge pull request #279 from mattt416/maas_agent_token_changes

Default to creating agent token for each entity