[dependencies] Wrong DSL implementation of deps

A few facts before:

1) DSL not support containers as deps, only services and jobs:
   https://github.com/openstack/fuel-ccp/blob/master/fuel_ccp/dependencies.py#L28.

2) Entrypoints scripts can do report to etcd only by containers names (or jobs), not whole service.

3) Currently fuel-ccp works just because in any fuel-ccp-{project} repository the container name the SAME that service name (service: nova-api == container: nova-api) and all services has exactly one container or several, but not used as dependency.

STEPS TO REPRODUCE:

1) fetch all fuel-ccp-* repos

2) go to fuel-ccp-nova/service/nova-libvirt.yaml and do change of container name:

service:
  name: nova-libvirt
  host-net: true
  daemonset: true
  containers:
    - name: nova-libvirt-container <--------- here (container name != service name)
      image: nova-libvirt

3) go to fuel-ccp-nova/service/nova-compute.yaml and try setup the container as dep:

service:
  name: nova-compute
  host-net: true
  daemonset: true
  containers:
    - name: nova-compute
      image: nova-compute
      privileged: true
      ...
      daemon:
        command: nova-compute --config-file /etc/nova/nova.conf
        dependencies:
          - nova-db-migrations
          - nova-libvirt-container <--------- here

4) ccp --debug -v show-dep nova-compute

EXPECTED RESULT:
all is OK

ACTUAL RESULT:

2016-10-03 05:59:53,541 ERROR cli 'nova-libvirt-container'
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/dist-packages/cliff/app.py", line 387, in run_subcommand
    result = cmd.run(parsed_args)
  File "/usr/local/lib/python2.7/dist-packages/cliff/command.py", line 59, in run
    return self.take_action(parsed_args) or 0
  File "/home/kbespalov/mirantis/fuel-ccp/fuel_ccp/cli.py", line 156, in take_action
    dependencies.show_dep(parsed_args.components)
  File "/home/kbespalov/mirantis/fuel-ccp/fuel_ccp/dependencies.py", line 154, in show_dep
    deps = get_deps(components, components_map)
  File "/home/kbespalov/mirantis/fuel-ccp/fuel_ccp/dependencies.py", line 131, in get_deps
    deps, job_parents = _calculate_service_deps(service_name, deps_map)
  File "/home/kbespalov/mirantis/fuel-ccp/fuel_ccp/dependencies.py", line 119, in _calculate_service_deps
    next_iteration_set.update([deps_map[dependency]])
KeyError: 'nova-libvirt-container'
Traceback (most recent call last):
  File "/home/kbespalov/mirantis/fuel-ccp/fuel_ccp/cli.py", line 221, in <module>
    main()
  File "/home/kbespalov/mirantis/fuel-ccp/fuel_ccp/cli.py", line 217, in main
    CCPApp().run(argv)
  File "/home/kbespalov/mirantis/fuel-ccp/fuel_ccp/cli.py", line 202, in run
    return super(CCPApp, self).run(argv)
  File "/usr/local/lib/python2.7/dist-packages/cliff/app.py", line 267, in run
    result = self.run_subcommand(remainder)
  File "/usr/local/lib/python2.7/dist-packages/cliff/app.py", line 387, in run_subcommand
    result = cmd.run(parsed_args)
  File "/usr/local/lib/python2.7/dist-packages/cliff/command.py", line 59, in run
    return self.take_action(parsed_args) or 0
  File "/home/kbespalov/mirantis/fuel-ccp/fuel_ccp/cli.py", line 156, in take_action
    dependencies.show_dep(parsed_args.components)
  File "/home/kbespalov/mirantis/fuel-ccp/fuel_ccp/dependencies.py", line 154, in show_dep
    deps = get_deps(components, components_map)
  File "/home/kbespalov/mirantis/fuel-ccp/fuel_ccp/dependencies.py", line 131, in get_deps
    deps, job_parents = _calculate_service_deps(service_name, deps_map)
  File "/home/kbespalov/mirantis/fuel-ccp/fuel_ccp/dependencies.py", line 119, in _calculate_service_deps
    next_iteration_set.update([deps_map[dependency]])
KeyError: 'nova-libvirt-container'