Description of problem:
When users ran a container w/ name then use atomic top to monitor the running container, atomic stop doesn't work, the image id is okay, but it's not very friendly for users, we should support container name just like atomic run, etc.

Version-Release number of selected component (if applicable):

[cloud-user@plat-infra-4zpfp3 ~]$ sudo atomic host status
  TIMESTAMP (UTC)         VERSION     ID             OSNAME               REFSPEC                                                        
* 2016-04-12 14:20:45     7.2.3-1     644fcc6035     rhel-atomic-host     rhel-atomic-host-ostree:rhel-atomic-host/7/x86_64/standard     
  2015-02-19 20:26:26     7.1.0       5799825b36     rhel-atomic-host     rhel-atomic-host-ostree:rhel-atomic-host/7/x86_64/standard   
  
[cloud-user@plat-infra-4zpfp3 ~]$ rpm -q atomic docker
atomic-1.9-4.gitff44c6a.el7.x86_64
docker-1.9.1-25.el7.x86_64

[cloud-user@plat-infra-4zpfp3 ~]$ sudo docker inspect --format='{{.Config.Labels.Version}}-{{.Config.Labels.Release}}' registry.access.redhat.com/rhel7/rsyslog
7.2-21

How reproducible:
always

Steps to Reproduce:
1. atomic install registry.access.redhat.com/rhel7/rsyslog:latest
2. atomic run -n rsyslog registry.access.redhat.com/rhel7/rsyslog:latest
3. docker ps
4. atomic top rsyslog

Actual results:

[cloud-user@plat-infra-4zpfp3 ~]$ sudo docker ps
CONTAINER ID        IMAGE                                      COMMAND             CREATED             STATUS              PORTS               NAMES
366df94058cf        registry.access.redhat.com/rhel7/rsyslog   "/bin/rsyslog.sh"   4 seconds ago       Up 3 seconds                            rsyslog

[cloud-user@plat-infra-4zpfp3 ~]$ sudo atomic top -n 2 366df94058cf|grep rsyslogd
366df94058cf rsyslog 11711      0.0    0.3    0      0      /usr/sbin/rsyslogd -n
366df94058cf rsyslog 11711      0.0    0.3    0      0      /usr/sbin/rsyslogd -n

[cloud-user@plat-infra-4zpfp3 ~]$ sudo atomic top rsyslog
Traceback (most recent call last):
  File "/bin/atomic", line 525, in <module>
    sys.exit(_func())
  File "/usr/lib/python2.7/site-packages/Atomic/top.py", line 121, in atomic_top
    proc_info += self.get_pids_by_container(cid)
  File "/usr/lib/python2.7/site-packages/Atomic/top.py", line 161, in get_pids_by_container
    con_name = str(next((l for l in self.active_containers if l['Id'].startswith(con_id)), None)['Names'][0])
TypeError: 'NoneType' object has no attribute '__getitem__'

Expected results:


Additional info: