Use docker-compose to manage services

[hwchiu]

#1 and #2 issues are the same problems, we used the magic DNS name host.docker.internal in configuration files and it only works in docker in MAC environment, not Linux.

Mininet/P4Runtime Shell/ONOS

• To fix this problem, I replace all previous scripts with docker-compose and makefile. By the docker-compose, we using simple Linux bridge to connect all containers together and then can access them its name. like mininet:50001.
• P4Runtime shell should wait for the mininet to be ready, not container status, but the application status. and it's not supported by docker compose. I use another container to wait for it by testing the connection mininiet:50001
• Already tested in MAC and Ubuntu.

netcfg

1. Fix the wrong config file name in netfcg.json, it was netcfg-3switch but it should be netcfg.json.
2. Use the makefile command to push netcfg to ONOS controller.

$ make netcfg

gnmi

1. We need to attach the gnmi container to the same network running by docker-compose, and we can get it by adding the --network arguments in its docker run command.
2. Add the command into Makefile and then wrap the arguments in a variable ARGS so that we can execute the gnmi command in the following way.

$ make ARGS="get xxxxxxx" gnmi

[hwchiu]

close when #5 be merged