[F.REQ] Added ability to analyzes resource usage of running containers

[alex-agency]

Currently, application allows to see how many virtual hard drive space used by images only.
In case of you need to see HDD, RAM or CPU per each containers you need install Google CAdvisor and go to it, which is not always useful.

It would be great to see HDD, RAM and CPU in the AMHub for each running containers.
The easiest way to implement it is to use public Google CAdvisor REST API. The application could recognise if CAdvisor is installed in the docker and then use its api to show resource usage.

[xlenz]

it would be nice to see current
cpu load
ram usage (total/free/used)
network
hdd
of docker host.

As well as see current the same statistics per container (or at least some). Tricky issue is that to obtain this statistics you have to make additional REST call per container which is really bad (especially having 100 containers running on one docker host).