Comparsion with concurrents

Comparsion

With rancher

|                       | haven |          rancher         |        
|view all nodes         |   +   |           -              |
|view all containers    |   +   |           -              |
|move node between ENVs |   +   |           -              |
|count of containers    |   2   |   1 + ~4 on each node    |

• rancher does not support existing swarm clusters https://github.com/rancher/rancher/issues/4680
• rancher drop support of standalone swarm
• support of swarm-mode is experimental