Router properties.

TODO: This assumes that the manifest looks like this (some
details omited):

jobs:
- name: core
  release: cf-release
  template:
  - postgres
  properties:
    db: databases
properties:
  databases:
    address: <%= ip(0, "default.static") %>
    port: 5524
    pool_size: 10
    roles:
    - tag: admin
      name: ccadmin
      password: f0o
    - tag: admin
      name: uaaadmin
      password: b@r
    databases:
    - tag: cc
      name: appcloud
      citext: true
    - tag: uaa
      name: uaadb

which is too hardwired :-(